The adjustable rear sight flipped-up. It's marked approximately 600 yards, which looks a little optimistic…. The forward vertical grip is American walnut, as would be the pistol grip and stock, and the wood on my sample was very properly figured. The ahead grip is attached by means of screw into https://belgian-browning-double-a76206.blue-blogs.com/40054676/the-basic-principles-of-m1-carbine