Receiver Parts

Tactical Edge Arms 5.56 Midlength Complete Upper w/ WSR12 Rail - 14.5"

Andro Corp Industries AR-15 5.56 NATO Partial Upper Receiver Group - 10.3"

Primary Weapons Systems MK111 MOD 1-M .223 Wylde Complete Upper - 11.85"

Aero Precision M4E1 5.56 Partial Upper Receiver w/ Atlas R-One Handguard - 16" Black

Sons of Liberty Gun Works M4 Patrol SL 5.56 AR-15 Upper - 10.5"

Bootleg Mil Spec AR-15 5.56 NATO CamLok (M-Lok) Partial Upper

Sons of Liberty Gun Works M4 Patrol SL 5.56 AR-15 Upper - 16"

Sharps Bros AR-15/M4 .223 Wylde Complete Upper Receiver - 16"

Blackout Defense Dual Taper Lock .223 Wylde Complete AR15 Upper

Daniel Defense MK18 RIII Complete Upper Receiver - 10.3" Black

Rainier Arms RUC PRO MK1 5.56 NATO Partial Upper Receiver

Sons of Liberty Gun Works M4-EXO3 5.56 AR-15 Upper - 10.5"

Sons of Liberty Gun Works M4-76 5.56 AR-15 Upper - 10.5"

Rainier Arms RUC 5.56 NATO DI Complete Upper - 16"

Rainier Arms RUC PRO MK1 5.56 NATO Partial Upper Receiver - 14.5" FDE

Rainier Arms RUC PRO MK1 5.56 NATO Partial Upper Receiver - 10.5"

Rainier Arms RUC PRO MK1 5.56 NATO Partial Upper Receiver - 12.5"

Rainier Arms RUC Pro MK2 5.56 NATO Partial Upper Receiver

Rainier Arms RUC DI 5.56 NATO Partial Upper Receiver

Maxim Defense MDX 510 5.56 NATO Mil-Spec Complete Upper - 10.3"

Sons of Liberty Gun Works M4-EXO3 5.56 AR-15 Upper - 16"

Sons of Liberty Gun Works M4-89 5.56 NATO AR-15 Upper - 10.5"

Sons of Liberty Gun Works M4-89 5.56 AR-15 Partial Upper Receiver Group - 11.5"

Q LLC Sugar Weasel Upper 5.56 NATO 13"

Bravo Company MFG (BCM) MK2 AR-15 5.56 NATO Complete Upper Receiver Group - 18"

Primary Weapons Systems .223 Wylde MK116 MOD 1-M Complete Upper - 16.1"

Maxim Defense MDX 505 PDX 5.56 NATO Mil-Spec Complete Upper - 5.5" Urban Grey

Arms Republic 9mm Complete Upper Assembly - 16"

Rainier Arms / Rellim Arms AR-15 .223 Wylde Take Down Upper Receiver Assembly - 8.5"

Rainier Arms / Rellim Arms AR-15 5.56 NATO Take Down Upper Receiver Assembly - 16"

Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 16"

Dead Foot Arms AR-15 AR-SD 9MM Upper Assembly

Dead Foot Arms AR-15 AR-MP9 9MM Upper Assembly

Foxtrot Mike (FM) Products AR-15 Mike-15 Gen 2 .223 Wylde Complete Upper Receiver - 16" (Rainier Arms Exclusive)

Rainier Arms RUC PRO Mk1 Riflespeed Partial Upper Receiver - 11.5"

Rainier Arms RUC PRO Mk1 5.56 NATO Riflespeed Partial Upper Receiver - 12"

Blackout Defense Quantum Mark 2 .223 Wylde Complete Upper Receiver

Foxtrot Mike (FM) Products AR-15 5.56MM FM-15 Gen 2 Complete Upper Receiver - 13.9" (Rainier Arms Exclusive)

Matador Arms MAT-9 9MM Blowback Upper Receiver

Sons of Liberty Gun Works M4-EXO3 5.56 AR-15 Upper - 13.7"

Angstadt Arms AR-15 5.56 Complete Upper Assembly - 16"

Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 13.7"

Noveske AR-15 N4 5.56 NATO SPR Upper - 18"

Noveske N4 Afghan Gen 4 5.56 NATO Complete Upper - 14.5" Black

Noveske N4 Recon Gen 4 5.56 NATO Complete Upper - 16" Black