An old Colt HBAR turned to a new M4gery. All other parts are RRA. 15" barrel with perm A2 hider. It actually matches much better than the pic, the color matches but the texture is a little rougher on the lower. BUIS someday, taxes put an end to that idea for a while. I shoulda taken a before pic of the mag - I got two really beat to hell but functional for $10. I coated the mag with black molyresin, only the mag catch area is wearing off a little. No range time yet though. I baked the parts for an extra hour - does molyresin cure more over time?