PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953. $129.99 $79.99. Details. SKU. 516446953. Model Number. 516446953. Brand. Palmetto State Armory. Barrel Length: 16"Barrel Profile: A2Barrel Steel: 4150V Chrome Moly VanadiumBarrel Finish: NitrideChrome Lining: NoMuzzle Thread: 1/2 x 28"Chamber: 5.56 NATO Twist Rate: 1 in 7"Barrel Extension: M4Gas System Length: Carbine LengthDiameter at Gas Block: .750"Gas Block Type: Low ProfileFront Sight: Pinned F-marked Front Sight BaseMuzzle Device: A2-StyleReceiver Material: Forged 7075 T6Receiver ...16” 5.56 Nato Nitride 4150V Chrome Moly Steel Barrel. Twist Rate: 1 in 7”. Thread Pitch: 1/2x28". JAKL Flash Hider. Black Knurled Charging. Black. Must be used with JAKL buffer system found on PSA JAKL lower or lowers built with a PSA JAKL lower build kit. Failure to use the PSA JAKL proprietary buffer system may result in damage to the ...Barrel: Phosphate finished chrome moly vanadium barrel. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine-length gas system. Barrel is finished off with a classic carbine-length handguard, F-Marked gas sight base, and A2 flash hider. Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black ...The PSA Sabre BCG is made with a carpenter 158 bolt with a light weight profile, designed to be used in AR-15 & M-16 style rifles. Bolt is equipped with Sprinco Gas Rings and coated with UPT E2 (CRN).</p>PSA-BCG. UPC: 4073460929. Weight: 5.00 LBS. Current Stock: Out of stock. Add to Wish list. Description. Reviews. Shipping & Returns. Palmetto State Armory 5.56 Premium Full Auto Bolt Carrier Group. Milspec Carpenter No. 158® steel bolt. Shot Peened Bolt. High pressure tested. Mag particle inspected. Chrome Lined Carrier (AUTO) SAVE $66.09. When you add both! Add All To Cart. Total Price: $222.99 $156.90. Magpul PMAG 30 A4/M4 GEN 2 MOE 5.56 30rd Magazine - MAG571-BLK x 10 - $123.00. This item: Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt - No Logo - $99.99. PSA Gen4 9mm BCG. SilencerCo Enhanced BCG. Bootleg Four Position BCG. Brownells Titanium BCG. Geissele Enhanced AR-15 Bolt Carrier Group. Best AR … PSA 5.7 Rock. AK-V. AK-47. View as Grid View List View. Items 1-24 of 4492. Page. ... Toolcraft Logo'd Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt - 5165449729 This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR-15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance.Aug 27, 2023 · Home. [Ultimate Resource] AR Rifle Reviews. [Review] Palmetto State Armory (PSA) AR-15 Review. PSA 5.56 & .223 Wylde. Is PSA worth it? We test three rifles over many years and many rounds...we review their fit, finish, accuracy, reliability, and more. BY Eric Hung, Founder, CEO, Updated August 27, 2023. 124 Comments. Bookmark. Barrel: 16" barrel length Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a mid-length gas system. The A2-style profile barrel is phosphate coated and finished off with a .750" diameter F-marked front sight base with sling swivel, classic mid-length handguards, and an A2 flash hider. Upper: Forged 7075-T6 A3 AR upper is hard ...Toolcraft Non-Logoed Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt. In stock. Toolcraft Non-Logoed Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt. Regular Price $179.99 Special Price $109.99. ... Our PSA firearms and parts are warranted to be free from defects in materials and craftsmanship for the serviceable lifetime of the ...PSA 14.7" Mid-Length CHF 5.56 NATO 1:7 Geissele 13" MK14 M-Lok Upper - No BCG or CH - Pinned & Welded. ... Upper Does Not Include BCG Or Charging Handle. Reviews . Q & A. Retail Stock. Compliance. Shipping Restrictions. It is the customer’s responsibility for understanding state laws regarding all purchases made.Features. Barrel: 16", chrome moly vanadium. Chambered in 7.62x39mm, with a 1/10 twist, and a carbine-length gas system. Barrel is finished off with a .750" diameter F-marked front sight base with sling swivel, standard handguards, and an A2 flash hider. Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability.PSA 7.5" Pistol-length 300AAC Blackout 1/8 Phosphate 7" Lightweight M-Lok Upper Without BCG or CH. Rating: 94%. (106) Regular Price $429.99 Special Price $199.99. Add to Cart. Add to Wish List Add to Compare.Want a 1300 yard AR-15? We review PSA's .224 Valkyrie upper for reliability, accuracy, and worth-it-ness. Plus pics and videos of our long range shots. Features. This 9mm Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR platform rifles and pistols. The FailZero Black Nitride 9mm BCG is compatible with both lowers designated for Glock or Colt magazines. All critical parts are coated with Salt Bath Nitride (Black) which provides durability and increases both wear ... If you’re on a Mac running a relatively new version of macOS (Catalina or Big Sur, seemingly) and it’s having all sorts of weird issues right now: you’re not alone. We’re seeing a ...Valrubicin Intravesical: learn about side effects, dosage, special precautions, and more on MedlinePlus Valrubicin solution is used to treat a type of bladder cancer (carcinoma in ...AR-15 Charging Handles. We here at Palmetto State Armory want you to install the right one so you can improve your AR-15 rifle's overall performance. We offer AR-15 charging handles from brands such as PSA Custom, Radian, Geissele, Timber Creek, and more. We know a thing or two about AR-15 upper parts, so let us help you out with your AR-15 needs.Features. This 9mm Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR platform rifles and pistols. The FailZero Black Nitride 9mm BCG is compatible with both lowers designated for Glock or Colt magazines. All critical parts are coated with Salt Bath Nitride (Black) which provides durability and increases both wear ... PSA 16" MID-LENGTH 5.56 NATO 1:7 NITRIDE FREEDOM UPPER - WITH BCG AND CH - 507281. 16" Barrel length 4150V Chrome Moly Vanadium Steel 5.56 Nato Chamber Melonite Finish 1 in 7" twist rate M4 Feed ramps F-Marked Front sight post A2 Flash Hider Sling Loop Standard Hand Guards Forged Upper Receiver M16 Bolt Carrier Group 9310 Bolt Charging Handle This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR-15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance. PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953. $129.99 $79.99. Details. SKU. 516446953. Model Number. 516446953. Brand. Palmetto State Armory. PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953. $129.99 $79.99. Details. SKU. 516446953. Model Number. 516446953. Brand. Palmetto State Armory. PSA Gen4 10.5" 9mm 1/10 Nitride 9" Lightweight M-lok Railed Upper - With BCG & CH. Rating: (14) $599.99$319.99. Add to Cart.PSA Premium 5.56 Nickel Boron BCG & 10 Magpul PMAG Gen 2 MOE 5.56x45 30rd Magazines ... BCG will be packed dry. Nickel Boron's natural surface lubricity is not a substitute for normal rifle lubrication. Please follow all manufacturers recommendations for lubrication. It is possible to discolor the finish with dirty ammo or prolonged use without ...That’s the real cost of a bad choice. The V Seven Titanium BCG is the best AR-15 bolt carrier group that you’re going to find. It’s lighter than steel and stronger than either steel or aluminum. It’s both Magnetic Particle Inspected and High-Pressure Tested, pass those and you’re the best of the best.In stock. PSA 16" Classic M4 Freedom Upper with BCG and Charging Handle. Regular Price$389.99$289.99. Details. SKU. 77778111. Model Number. 77778111. Brand.Initiating a claim. To initiate a Warranty claim, call Palmetto State Armory Customer Service: Hours: Monday through Friday, 9am - 5pm EST Email: Contact Form. Customer service will issue an RMA number to allow for the return of the firearm. Warranty claims must have this RMA filled out, and included in the box with the firearm or part.AR-15 Bolt Carrier Groups. Palmetto State Armory has a large selection of bolt carrier groups for your AR-15 rifle or pistol. We offer BCGs from brands like Palmetto State … PSA 20" CHF 1:7 A2 Rifle Length 5.56 NATO Premium AR-15 Upper Assembly - with BCG, CH, & Carry Handle PSA's core principle remains the same, and our commitment to freedom before profit remains unwavering. ... PSA 10.5" 5.56 NATO 1:7 Nitride Upper - without BCG or Charging Handle - 507020 . Rating: 94%. Regular Price $399.99 …1.6″ @ 100 yards during break-in. Palmetto State Armory Gen III PA-10 Rifle. The PSA Gen III PA-10 is like a dream behind the gun. It’s really well balanced and not an excessively heavy hog ...Carbine-length gas barrel is finished off with a PSA Lightweight 10.5" M-Lok rail, a low profile gas block, and a PSA A2 Flash Hider. Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. Featuring a mil-spec finish, these uppers are made for us right here in the USA by a mil-spec manufacturer.Features. This 9mm Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR platform rifles and pistols. The FailZero Black Nitride 9mm BCG is compatible with both lowers designated for Glock or Colt magazines. All critical parts are coated with Salt Bath Nitride (Black) which provides durability and increases both wear ...BLEM PSA Gen3 PA10 18" Mid-Length .308 WIN 1:10 Stainless Steel 15" Lightweight M-lok Upper - With BCG & CH. Rating: (24) $749.99 $459.99. Add to Cart.Feb 3, 2015 ... A table top, side-by-side comparison of the Spikes Tactical Nickel Boron BCG and Palmetto State Armory's top-of-the-line Nickel Boron BCG.The PSA Sabre BCG is made with a carpenter 158 bolt with a light weight profile, designed to be used in AR-15 & M-16 style rifles. Bolt is equipped with Sprinco Gas Rings and coated with UPT E2 (CRN).</p>Barrel: Phosphate finished chrome moly vanadium barrel. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine-length gas system. Barrel is finished off with a classic carbine-length handguard, F-Marked gas sight base, and A2 flash hider. Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black ...The PSA Custom PX-9 9MM 4" Nitride 6" Slim-Line PCC Pistol has been assembled to precision in the PSA Custom Shop and been given a hand-painted, Teflon-coated finish to give you a firearm with custom features directly from the factory. ... Bolt Carrier Group: Gen 4 Hybrid 9mm BCG. Nitride treated 8620 steel, with an enhanced firing pin and ...PSA 224 Valkyrie & BCG Combo Package: The PSA 224 Valkyrie barrel was created with a 416R Stainless Steel with a 1:6.5 twist rate for optimal accuracy over long distances. Cycling reliability is achieved with a rifle length gas system. The bolt carrier group is a full-auto profile, nitrided BCG with a 9310 bolt.PSA 20" Rifle-Length 5.56 NATO 1/7 Stainless Steel 15" Lightweight M-lok Upper With BCG & Charging Handle. In stock. ... Our PSA firearms and parts are warranted to be free from defects in materials and craftsmanship for the serviceable lifetime of the firearm or part. All Palmetto State Armory barrels are machined and guaranteed to be ...No need to upgrade to an AR-10, reach out to 1000 yards easily, affordable uppers, and even affordable ammo (~50-60 cents each for the American Eagle 75 gr). PSA Valkyrie .224 (Complete) PSA’s entry into the field brings reliability, decent accuracy, and of course…awesome bang-for-the-buck-ness. Best Long-Range AR-15 Budget Upper. 16” 5.56 Nato Nitride 4150V Chrome Moly Steel Barrel. Twist Rate: 1 in 7”. Thread Pitch: 1/2x28". JAKL Flash Hider. Black Knurled Charging. Black. Must be used with JAKL buffer system found on PSA JAKL lower or lowers built with a PSA JAKL lower build kit. Failure to use the PSA JAKL proprietary buffer system may result in damage to the ... Learn about home remedies that can ease fibrocystic breast disease, a benign but uncomfortable disease that causes breast lumps and discomfort. Advertisement Although the term fibr...All E-BCG's® feature the LANTAC CP-R360™ patent pending domed head cam pin that is machined from 17-4PH Stainless Steel and hardened to H900 condition (45RC approx). The ultra-smooth head reduces wear within the upper receiver. The BCG's 11.7oz weight helps to increase lock time and smoother operation. Gas keys are properly staked at four ...Checked out the PSA / Toolcraft NiB BCG and the specs say that the bolt is shot peened and MPI but doesn't mention HPT. Are they actually HPT or does Toolcraft …Barrel Length: 16" Gas System: Midlength Barrel Profile: A2 Barrel Steel: 4150 Chrome-Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1:7 Barrel Extension: M4 Diameter at Gas Block: .750 Gas Block Type: Low-profile Muzzle Device: A2 Flash Hider Receiver Material: Forged …PSA Freedom AR-15 Upper 5.56 16" Carbine 1:7 M4 Nitride, No BCG & CH - 507819. Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling.Features. Barrel: 16", chrome moly vanadium. Chambered in 7.62x39mm, with a 1/10 twist, and a carbine-length gas system. Barrel is finished off with a .750" diameter F-marked front sight base with sling swivel, standard handguards, and an A2 flash hider. Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability.Surely, this won’t be abused? Alongside the launch of the iOS 15.5 update, Apple introduced a new set of rules to govern auto-renewing subscriptions on the App Store. Now, instead ...PSA Gen4 9mm BCG. SilencerCo Enhanced BCG. Bootleg Four Position BCG. Brownells Titanium BCG. Geissele Enhanced AR-15 Bolt Carrier Group. Best AR …The PSA Sabre BCG is made with a carpenter 158 bolt with a light weight profile, designed to be used in AR-15 & M-16 style rifles. Bolt is equipped with Sprinco Gas Rings and coated with UPT E2 (CRN).Introduction: Prostatic Specific Antigen (PSA), Bacillus Calmette-Guerin (BCG) increase after intravesical BCG has been reported. The need of prostate biopsy in these patients is object of debate. The aim of our study was to evaluate the effect of intravesical therapy on PSA after transurethral resection (TUR) of nonmuscle-invasive …Patients usually do not need to fast before having a prostate-specific antigen blood test, according to MedlinePlus. It is important for patients to inform their doctors of their c...Daily Deal product offerings include PSA's American Made firearms, AR-15 parts and accessories, 9mm pistols, bulk ammo, magazines, optics, and so much more. Knives. PSA Hex Rail. Ammo. Build Kits and Parts Kits. ... Toolcraft Logo'd Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt - 5165449729 . Rating: 96% Regular Price $199.99 ...New campaign encourages people to 'Be a Helper' by supporting pets in local communitiesNEW YORK, Oct. 12, 2022 /PRNewswire/ -- The Ad Council, the... New campaign encourages people...1.6″ @ 100 yards during break-in. Palmetto State Armory Gen III PA-10 Rifle. The PSA Gen III PA-10 is like a dream behind the gun. It’s really well balanced and not an excessively heavy hog ...If you are an avid collector of sports cards or other collectibles, you may have heard of PSA grading. PSA (Professional Sports Authenticator) is a company that specializes in grad...PSA is your 300 Blackout headquarters for rifles, pistols, kits, ammo, and more. Shop Online Today and Save! ... PSA 8.5" Pistol Length 300AAC Blackout 1:7 Nitride 7" Lightweight M-Lok Upper With BCG & CH - 5165449777 . Rating: 96%. Regular Price $529.99 Special Price $309.99. Add to Cart. Add to ...Objective: The objective of this study was to evaluate the incidence of prostatic carcinoma in patients treated by intravesical BCG-therapy for superficial bladder cancer and presenting granulomatous prostatitis. The authors discuss the problems of interpretation of total PSA and the potential indications for prostatic biopsies in this population.AR-15 Rifles & More. Palmetto State Armory is your one-stop shop for all your AR-15 rifle needs. Shop complete AR-15 rifles and AR-15 pistols, upper receivers, lower receivers, build kits, AR-15 parts, etc. Also, shop our selection of 5.56 ammo by some of … The PSA 16" mid-length upper comes with bolt carrier group, charging handle, and Magpul back up sight set, all in a black finish. Order yours today! PSA 16" Midlength 5.56 NATO 1:7 Nitride 13.5" Lightweight M-Lok Upper With BCG, CH, & MBUS Sight Set | Palmetto State Armory The ESG Data Convergence Initiative, cochaired by CalPERS and Carlyle, was formally launched in the fall of 2021 and is supported by BCG as a neutral partner. The initiative is a first-of-its-kind, industry-led effort by the private equity community to drive consensus around meaningful ESG metrics and generate comparable, performance …Technically, someone with any PSA level can have prostate cancer; that’s not the only thing we look at when assessing a patient. Generally speaking, though, PSA levels for men who are: Age 60 or older: should be at or below 4.0 mg/mL. Age 59 or younger: should be at or below 2.5 mg/mL. The average PSA for men in the younger …Details. PSA 16" Classic M4 Freedom Upper with BCG & Charging Handle, OD Green - 7780181. 16" Barrel Length. 5.56 NATO Chamber. 1 in 7" twist. 4150V Chrome Moly Steel Barrel, Nitride. Carbine-length Gas System. M16 Full Auto Bolt Carrier.Barrel Length: 16" Gas System: Midlength Barrel Profile: A2 Barrel Steel: 4150 Chrome-Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1:7 Barrel Extension: M4 Diameter at Gas Block: .750 Gas Block Type: Low-profile Muzzle Device: A2 Flash Hider Receiver Material: Forged …AR-15 Rifles & More. Palmetto State Armory is your one-stop shop for all your AR-15 rifle needs. Shop complete AR-15 rifles and AR-15 pistols, upper receivers, lower receivers, build kits, AR-15 parts, etc. Also, shop our selection of 5.56 ammo by some of …BLEM PSA 16" Classic Freedom M4 Upper With BCG and CH, Flat Dark Earth . Rating: 90%. Regular Price $429.99 Special Price $279.99. Add to Cart. Add to Wish List Add to Compare PSA 20" CHF Rifle-Length 5.56 NATO 1/7 18" Lightweight M-Lok Upper - …This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR-15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance.This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR-15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increas ... This product is fulfilled by a PSA Partner and shipping times may vary. Customers must ...The Brownell’s Titanium BCG pairs best with an adjustable gas block. At only 7.9 ounces, it’s fairly light and easy to tune your AR gas system around. This titanium BCG allows you to use multiple calibers, including 5.56, .300 Blackout, and .204 Ruger, without any issues. The bolt is also HPT and MP inspected.Bolt Carrier Groups. 127. AR 15 Bolt Carrier Groups. Sort. Filter. 127 Products. Brand. Items On Sale. Price. $504.46$36.95. Color. Caliber or Gauge. Customer Rating. Platform. Thread Pattern. In Stock. Bear Creek Arsenal M16 Cut 5.56 NATO Complete Bolt Carrier Group - Black Nitride. View Details. $67.99. In Stock.BLEM PSA Gen3 PA10 18" Mid-Length .308 WIN 1:10 Stainless Steel 15" Lightweight M-lok Upper - With BCG & CH. Rating: (24) $749.99 $459.99. Add to Cart.Feb 3, 2015 ... A table top, side-by-side comparison of the Spikes Tactical Nickel Boron BCG and Palmetto State Armory's top-of-the-line Nickel Boron BCG.
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The PSA Custom Series has teamed up with Microbest to produce the PSA Custom Fathers of Freedom 5.56 Full Auto Profile Phosphate Coated Bolt Carrier Group. This BCG has been designed from the ground up with the most avid shooters in mind, using only the best materials available on the market today. Features: The PSA Custom Series is your source ... For the ultimate race rifle, a Titanium BCG cuts a lot of weight out of the BCG while keeping it very strong. Rubber City Armory is the best of the best in the world of low-mass and makes one hell of a durable BCG. This one features a 9310-steel bolt and tool steel for the extractor and cam pin. MSRP is $360.For the ultimate race rifle, a Titanium BCG cuts a lot of weight out of the BCG while keeping it very strong. Rubber City Armory is the best of the best in the world of low-mass and makes one hell of a durable BCG. This one features a 9310-steel bolt and tool steel for the extractor and cam pin. MSRP is $360.Sep 5, 2016 ... Comments7 · Daniel Defense BCG Physical · Poverty Build Pt. · PSA Fathers of Freedom BCG Physical · Gear Review: Bolt Carrier Groups.. &...The PSA Custom Series has teamed up with Microbest to produce the PSA Custom Fathers of Freedom 5.56 Full Auto Profile Phosphate Coated Bolt Carrier Group. This BCG has been designed from the ground up with the most avid shooters in mind, using only the best materials available on the market today. Features: The PSA Custom Series is your source ...PSA 10.5" 5.56 NATO 1/7 Phosphate 10.5" Lightweight M-Lok AR-15 Upper W/ Romeo MSR, MBUS Sight Set, BCG, & CH ... Our PSA firearms and parts are warranted to be free from defects in materials and craftsmanship for the serviceable lifetime of the firearm or part. All Palmetto State Armory barrels are machined and guaranteed to be concentric with ...Stellantis, the global corporation formed through a merger between Fiat Chrysler Automobiles and French automaker Groupe PSA, signed a binding agreement with a lithium producer as ...BCG Specifications: https://studio.youtube.com/video/jVPqwwS8AM8/editRumble: https://rumble.com/user/Kotaboy32Patreon: https://www.patreon.com/kotaboy32Em...PSA Premium 5.56 Nickel Boron BCG & 10 Magpul PMAG Gen 2 MOE 5.56x45 30rd Magazines Magpul PMAG 30 A4/M4 GEN 2 MOE 5.56 30rd Magazine - MAG571-BLK x 10 - $123.00 Premium 5.56 Nickel Boron BCG with Carpenter 158 Bolt - No Logo - $99.99PSA 20" Rifle-Length 6.5 Grendel 1/8 Stainless Steel Barrel & BCG Combo - 5165448797. Regular Price $289.99 Special Price $249.99. Details; SKU:BCG has the ToolCraft Logo and PA-15 engraved on to the side of the BCG. Milspec Carpenter No. 158® steel bolt Shot Peened Bolt ... Our PSA firearms and parts are warranted to be free from defects in materials and craftsmanship for the serviceable lifetime of the firearm or part. All Palmetto State Armory barrels are machined and guaranteed …PSA 16" MID-LENGTH 5.56 NATO 1:7 NITRIDE 13.5" LIGHTWEIGHT M-LOK UPPER - WITHOUT BCG OR CH Barrel Length: 16" Gas System: Mid Barrel Profile: A2 Barrel Steel: 4150 Chrome-Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1:7 Barrel Extension: M4 Diameter at …Aug 18, 2023 ... ... bolt-carrier-group-mpi-auto/ PSA: https://palmettostatearmory.com/toolcraft-non-logo-premium-5-56-nickel-boron-bcg-with-carpenter-158-bolt.html..