AR Parts in 5.56x45mm NATO

Precision Defense 5.56 AR-15 Bolt Carrier Group - Chrome

Precision Defense Chrome Lined 5.56 AR-15 Barrel - Mid-Length - Government - 16"

Precision Defense Chrome Lined 5.56 AR-15 Barrel - Mid-Length - Government - 14.5"

Expo Arms Lite Barreled AR-15 Upper Receiver - 5.56 - 16" - Open Box

Expo Arms Barreled AR-15 Upper Receiver - 5.56 - 16" - Overrun - Open Box

Expo Arms 16" 5.56 NATO AR-15 Barreled Upper Receiver - 15" M-LOK Handguard - A2 Flash Hider - Open Box

Expo Arms Barreled AR-15 Upper Receiver - 5.56 - 16" - XP1215KM Keymo Brake - Open Box

Sons Of Liberty Gun Works Combat Grade 5.56 Mid-Length AR-15 Barrel with FSB - 16" - Open Box

SureFire Suppressor Optimized 5.56 AR-15 Bolt Carrier Group - DLC - Open Box

Precision Defense 5.56 NATO Chrome Lined Barrel - GOV Profile - Mid Length - 16" - Open Box

Precision Defense Barreled AR-15 Upper Receiver - 5.56 - 16" - Open Box

Rosco Manufacturing K9 5.56 AR-15 Barrel - Patrol Length - Tapered - 11.5" - Open Box

Radical Firearms 16" 5.56 NATO 1:7 Mid-Length SOCOM Barreled Upper - 12" M-LOK FCR Rail - Open Box

Faxon Firearms 5.56 NATO AR-15 Bolt Carrier Group - Nitride - Open Box

Daniel Defense V7 URG 5.56 NATO Barreled Upper Receiver - 11.5" - Primary Arms Exclusive - Open Box

Rosco Manufacturing Bloodline 5.56 AR-15 Barrel - Mid-Length - Government - 16" - Open Box

Bravo Company Manufacturing 5.56 AR-15 Bolt Carrier Group - Phosphate - Open Box

Ballistic Advantage Modern Series 5.56 AR-15 Barrel Gov. Carbine - 10.5" - Open Box

Geissele Automatics Super Duty MOD1 5.56 NATO Complete Upper Receiver - 14.5" Pinned - DDC - Open Box

Geissele Automatics 5.56 USASOC Improved Complete Near-Clone AR-15 Upper Receiver - Desert Dirt- 10.3" - Open Box

Geissele Automatics 5.56 CHF Mid-Length Heavy Profile AR-15 Barrel - 14.5" - Open Box

WMD 5.56 AR-15 Bolt Carrier Group Without Hammer - NiB-X Finish

Hodge Defense Systems MOD1 URG Complete AR-15 Upper Receiver - 5.56 - 16" - BLEM

Sons Of Liberty Gun Works M4-89 11.5" 5.56 NATO Barreled Upper Receiver Group - FREE SOLGW Ambi Charging Handle - BLEM