AR Parts in 5.56x45mm NATO

M16A1 Stripped Upper Receiver - Without M4 Feedramps

M16A1 Stripped Upper Receiver - M4 Feedramps

M16A1 Assembled Upper Receiver - With M4 Feedramps

Dirty Bird AR-15 5.56/.223/300BLK Bolt Carrier Group - Phosphate/Crome-Lined

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

Dirty Bird Industries 7.5 5.56 DRP Pistol M-LOK V2 Upper Assembly

Dirty Bird 10.5 Government Carbine 5.56 M-LOK Upper Assembly - V3, FDE

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

Dirty Bird 16" RECCE V2 .223 Wylde M-LOK Upper Assembly

Dirty Bird 16" Govt Mid 556 M-LOK Complete Upper - OD Green

Dirty Bird 16" Govt Mid 556 M-LOK Complete Upper - Midnight Bronze

Dirty Bird 16" Govt Mid 556 M-LOK Complete Upper - Black

Dirty Bird AR-15 Forged Multi-Cal Receiver Set + SRMS Handguard - FDE, 13.5"

Dirty Bird AR-15 5.56/.223/300BLK Bolt Carrier Group - Polished Nickel Boron

Dirty Bird Industries Enhanced Bolt Carrier Group .223/5.56 - Black Nitride

Dirty Bird 16" 5.56 NATO Midlength 416R Fluted Barrel - Nitride 1:8 Twist

Spikes Tactical SB51605-ML9R 5.56 - 16" Mid-Length LE w/FSP No Bayo Lug Barrel 1:7 Twist

Spikes Tactical Upper 5.56 16in Midlength LE w/13.2in M-LOK Rail

Stag 15 5.56 M4 Upper Receivers - Stag 15l Left Hand M4 Phosphate Upper

Stag 15 5.56 7.5in Tactical Nitride Upper Receivers - Stag 15l Left Hand Tactical 7.5'''' Nitride Upper

Stag 15 5.56 7.5in Tactical Nitride Upper Receivers - Stag 15 Tactical 7.5'''' Nitride Upper

Stag 15 5.56 10.5in Tactical Nitride Upper Receivers - Stag 15l Left Hand Tactical 10.5'''' Nitride Upper

Stag 15 5.56 10.5in Tactical Nitride Upper Receivers - Stag 15 Tactical 10.5'''' Nitride Upper

Stag 15 5.56 16in Tactical Nitride Upper Receivers - Stag 15 Tactical Nitride Upper