The Military Arms Channel features the PSA Harrington & Richardson XM177E2 Rifle that those who like retro rifles might want to check out. This is a lightweight and handy replica built for close-quarters combat or target shooting, featuring an M16A1 upper with a 12.7-inch pencil barrel, a pinned and welded flash hider with grenade ring for legal barrel length, Government XM177E2 markings on the lower receiver, and a premium aluminum CAR stock.