AR Parts in 5.56x45mm NATO

Rise Armament RA-140 Drop-in Trigger - Flat

Rise Armament RA-140 Drop-in Trigger - Curved

16" 5.56 NATO Pencil Midlength Lightweight M-LOK Upper Assembly

10.5" Slick Side Billet 5.56 Nitride Carbine M-LOK Upper Assembly

12" Aero Precision M4E1 Enhanced Upper Receiver and M-LOK Handguard Combo Gen 2

7" Aero Precision M4E1 Enhanced Upper Receiver and M-LOK Handguard Combo Gen 2

AR-15 .223/5.56 Bolt Carrier Group - FDE PVD

16" 5.56 NATO 1:8 Carbine Length M4 Barrel - Black Nitride

16" 5.56 NATO 1:7 Mid-Length Lightweight Barrel - Black Nitride

CAT Outdoors M4 Bolt Carrier Carbon Scraper Tool

13.5" AR-15 Superlight Duty M-LOK Free Float Handguard

Unrivaled Armory 2-Stage Dead Blow Competition Buffer System

13.9" 5.56 NATO 1:7 Black Nitride Midlength Pencil Barrel

14.5" 5.56 NATO 1:7 Black Nitride Midlength Pencil Barrel

Bravo BCMGUNFIGHTER Mod 3x3 Ambi Charging Handle - 5.56/.223

BCMGUNFIGHTER AR 15 Charging Handle (5.56/.223) w/Mod 3B (Large) Latch

16" M4 Carbine 1:8 M-LOK Upper Assembly - Black

16" 5.56 Gov / SOCOM Midlength Ultralight M-LOK Upper Assembly

20" Black Nitride 4150 Steel Heavy Barrel, 5.56 NATO, Rifle Length Gas System

16" 5.56 16" Parkerized Carbine Heavy Barrel

Defense Depot DPMS GII Complete Bolt Carrier Group

LMT Full-Auto Enhanced 5.56 Bolt Carrier

16" AR 15 Pencil Barrel 5.56 NATO

Cross Machine Tool UPUR-1LH Billet Left Handed AR-15 Upper Receiver