This Has The S & H Sear Installed. The Gun Has Markings For The 3 Round Burst And It Also Has The Parts Installed. The Gun Is In EXC Shape, Showing Wear Typical Of A Gun This Age. This Has The Short Combo Brake On The 16" Barrel. This gun has been completely gone over by Todd Brueckman of TBA Suppressors. The barrel was shortened and threaded in 1/2x28 so you can use any standard AR-15/M-16 flash hider or suppressor lockup. It has been engraved with the pictogram markings and a quad rail was installed.