Lower Parts

Retro Rifles

Buffer Tube / Receiver Extension

First Generation Buffer Tube (Receiver Extension) for Colt sliding stock models: XM177, XM177E2 and

Retro Rifles

Carbine / Commando / M4 Buffer Spring

Mil-Spec Buffer Spring for all sliding stock variants.

Retro Rifles

Carbine Buffer

Carbine Buffers 3 Options:   Mil Spec Buffer- 3 ounces H1 Buffer( Mil Spec) - 3.6 Ounces

Lock Ring / Castle Nut (Rare, Hard to find)

Used to tighten the carbine buffer tube to the lower receiver, the US Military has used two differen

Lower Parts Kit

Full lower parts kit to populate your lower receiver. Includes Semi-Auto Hammer, Trigger and your ch

M16 Auto Sear, with Spring

Standard M16 Auto Sear, with Spring. As used in the Full Auto AR15, M16, M16A1, M16A3, M4, Mk18, Mk

Retro Rifles

Rifle length Buffer Spring

Correct for all Rifle length stock builds - A1, A2, C7.