Results for 5.56x45mm NATO AR Rifles

Gau-5a Complete Upper Receiver & 4x Retro Carry Handle Scope - Brn Gau-5a 5.56mm 12.7''''bbl 1-12 Twist Pin/Weld W/Colt 4x21mm

M16a1 20'''' Rifle Length Upper W/Colt Ar-15 4x21mm - Brn-16a1 5.56x45 Nato 20'''' Bbl 1-7 Twist Upper W/Colt 4x21mm

Dd 14.5'''' M4a1 Riii Upper Receiver W/ Eotech Optics - Dd 14.5'''' M4a1 Riii Upper W/ Exps3-0 Holographic Red Dot

Dd 14.5'''' M4a1 Riii Upper Receiver W/ Eotech Optics - Dd 14.5'''' M4a1 Riii Upper W/ Exps2-0 Holographic Red Dot

Dd 14.5'''' M4a1 Fsp Upper Receiver W/ Eotech Optics - Dd 14.5'''' M4a1 Fsp Upper W/ Exps3-0 Holographic Red Dot

Dd 14.5'''' M4a1 Fsp Upper Receiver W/ Eotech Optics - Dd 14.5'''' M4a1 Fsp Upper W/ Exps2-0 Holographic Red Dot

Dd 10.3'''' Mk18 Socom Upper Receivers W/ Optics - Dd 10.3'''' Mk18 Socom Upper W/ Exps3-0 Holographic Red Dot

Brn-601 20'''' Upper W/Colt Ar-15 4x21mm Optic - Brn-601 5.56mm 20'''' Upper Receiver With Colt 4x21mm Scope

Mk18 Riii 10.3'''' Stripped Upper Receivers W/ Law Folder - Mk18 Riii 10.3'''' Stripped Upper W/ Law Folder Fde

M4a1 Fsp 14.5'''' Stripped Upper Receiver W/ Law Folder - M4a1 Fsp 14.5'''' Stripped Upper W/ Law Folder Fde

Qrb Upper Receiver Takedown Kits W/ Law Folding Adapter - Qrb Upper Takedown Kit Carbine W/ Folding Stock Adapater

Mike-15 Stripped Lowers - Mike-15 Stripped Lower Receiver W/ Pic Rail 5.56mm

Mike-15 Gen 2 Bufferless Lower - Foxtrot Mike-15 G2 Bufferless Lower,Zhukov Stock W/Moe Grip

Mike-15 Gen 2 Bufferless Lower - G2 Bufferless Lower, Picatinny Rail Adapter W/Thrill Grip

Iflr Lower Receiver & Billet Lower Receiver Set - 17 Design Iflr And 17 Design 2x Billet Lower Receiver Set

M4a1 Block Ii Tribute Bundle

Ke-15 Forged Mil-Spec Complete Lower Receiver 5.56mm

M4e1 Complete Piston Upper With Strike Eagle - 18'''' Piston Upper With Vortex 1-8x24mm Strike Eagle & Mount

Rebel 16" 5.56 AR 15 Upper With 12" Quad Handguard

Dirty Bird 16" Government Midlength 5.56 M-LOK Left-Handed Complete Upper

Dirty Bird 10.5" Government Carbine 5.56 M-LOK Upper Assembly - V3, Midnight Bronze

Dirty Bird 10.5" Government Carbine 5.56 M-LOK Upper Assembly - V2, OD Green

Dirty Bird 10.5" Government Carbine 5.56 M-LOK Upper Assembly - V2, Black

Dirty Bird 16" 5.56 NATO Govt M-LOK AR-15 Complete Upper Assembly V3 - Midnight Bronze