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PRODUCT DETAILS DETAILS Barrel Length: 16" Gas System: Carbine-Length Barrel Profile: M4 Barrel Steel: 4150V Chrome Moly Barrel Finish: Phosphate Chrome Lining: none Muzzle Thread: 1/2x28 Chamber: 5.56 NATO Twist Rate: 1 in 7" Barrel Extension: M4 Diameter at Gas Block: .750" Gas Block Type: F-marked Front Sight Base Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: Magpul MOE Handguards, Olive Drab Green Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158 Bolt Carrier Profile: Full Auto Charging Handle Included: Yes Rear Sight: Magpul MBUS Rear Flip-Up Sight Overall Length: 24.5" FEATURES Barrel: Phosphate finished 4150V chrome moly vanadium 16" barrel. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine-length gas system. this M4 barrel is finished off with Magpul MOE carbine-length handguards, 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 for durability. These uppers are made for us right here in the USA by a mil-spec manufacturer. Bolt: Full-auto profile bolt carrier group. Milspec Carpenter No. 158® steel bolt. Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. Build Kit: PSA EPT MOE Lower Build Kit, Olive Drab Green Includes Magpul MOE Stock, Pistol grip, and trigger guard, Palmetto State Armory EPT Lower Parts Kit, and Mil-Spec diameter 6-position buffer tube assembly. EPT Lower parts kit upgrades the standard combat-style fire control group with a single-stage, target-style, fire control group with polished contact surfaces and an electroless nickel coating. Everything you need to finish your stripped lower! Includes: Magpul® MBUS Rear Sight, Black WHAT'S INCLUDED Your new Palmetto State Armory kit will include the listed components that are required to assemble into a complete AR rifle or pistol: FIRE CONTROL GROUP AR-15 Hammer Hammer Spring AR-15 Trigger Trigger Spring Trigger/Hammer Pins Disconnector Disconnector Spring BUFFER TUBE ASSEMBLY Buffer Tube Buffer Buffer Spring Castle Nut Latch Plate Buffer Retainer Detent Buffer Retainer Detent Spring TAKEDOWN & PIVOT PIN ASSEMBLY Takedown Pin Pivot Pin Takedown Springs (3) Takedown Detents (3) BOLT CATCH ASSEMBLY Bolt Catch Bolt Catch Detent Bolt Catch Detent Spring Bolt Catch Roll Pin *Not included in 9mm build kits. MAGAZINE CATCH ASSEMBLY Magazine Catch Magazine Catch Button Magazine Catch Spring SAFETY SELECTOR ASSEMBLY Safety Selector Selector Detent Selector Spring
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