Beautiful gearbox, out of spec
Let me say the finish is top notch. The powder coat is way thick though and causes problems with bearings/shims, piston,cylinder/head,nozzle. The box also seems to not fit in many lowers . I tried in an a&k, lancer, valken, g&p. It will go in the a&k and line up but you have to notch the lower at the buffer tube. It will not even go in the valken, lancer, or g&p and line up.