Shop 1,074 Deals on 5.56×45mm NATO Rifle Parts

Patriot Ordnance Factory Minuteman 16.5" Complete Upper 5.56x45mm 1:8, Patriot Brown - 1815

Patriot Ordnance Factory Minuteman 16.5" Complete Upper 5.56x45mm 1:8, Black - 1652

Radian Weapons Model 1 MOE Upper M-LOK Rail with Charging Handle, Black - Advanced Tactical - R0428

Aim Sports 16" Complete Upper Assembly 5.56x45mm 1:8, Black - AR5CUB3

Troy Rear Di-Optic Aperture (DOA) Folding BattleSight, FDE - SSIG-DOA-RFFT-00

Troy Alpha BattleRail No Sight 9", Black - STRX-AL1-90BT-01

Troy Industries .223 Remington Upper with 16" Barrel, Black - SUPGA3M16BT00

Troy Industries .223 Remington Upper with 16" Barrel, Black - SUPGA4S16BT00

CMMG Resolute 16.10" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Mid-Length with Charging Handle - Armor Black - 55BB40BAB

Wilson Combat Accu-Tac Flash Hider 5.56mm TR-ATFH

FightLite MCR Dual-Feed 16.25" Upper 5.56x45mm 1:7 M-LOK Picatinny Rail, Black

Faxon Firearms Gunner Lightweight Complete Bolt Carrier 5.56x45mm/.300 AAC Blackout, Gold

Troy AR-15 Gas Block .750 Low-Profile Gas Block 2"

Troy M-LOK 3" Rail Section, BLK SRAI-MM1-30BT-00

Sons of Liberty Gun Works .223 Remington AR Lower, Black - ANGRYPATRIOT

Sons of Liberty Gun Works Combat V2 Barrel 5.56x45mm 13.70", Black - High-Quality Construction - 13.7COMBATV2-556

Sons of Liberty Gun Works Combat V2 Barrel 5.56x45mm 11.50", Black - Durable and Accurate - 11.5COMBATV2-556

VKTR Industries VK-1PW 5.56x45mm 13.70", Sniper Gray

VKTR Industries Combat Match Bolt, Silver - High-Quality Bolt for Superior Performance - V20060701001RP

Troy BattleSights Micro M4 Front/Rear Tritium Sight Set Black - SSIG-MCM-STBT-01

VKTR Industries VK-1 CA Compliant 5.56x45mm 16" Rifle, Black - California Legal Tactical - V-3110-0916-601-CA

Anderson Manufacturing Bolt Carrier Group - High-Quality and Precision Machined BCG - B2-K630-AB00-0P

Bushmaster 16" Classic Upper .223 Remington/5.56x45mm with 1:8 Twist Rate and M-LOK- Carbine-Length with BCG and CH- Black - 00-40011-BLK

Diamondback Firearms New York Compliant Barrel, Black - 556C16H50B8NYR