UTG RBT469B Stock Assembly Black Synthetic Fixed A2 AR-15 Bore Sighters and Arbors *This primer is compatible with

*This primer is compatible with large magnum rifle calibers like 223 WSSM

Each choke tube has the constriction and size laser marked on the end and body for easy reference

and three covered pockets to hold six (6) 9mm/40S&W/45ACP magazines or three (3) 20/30 round AR magazines

56x45 NATO

and foam padding

UTG RBT469B Stock Assembly Black Synthetic Fixed A2 AR-15 Bore Sighters and Arbors *This primer is compatible withLeapers AR 15 Standard A2 Fixed Butt Stock Assembly is molded from impact resistant advanced polymer. It comes complete with A2 extension tube, recoil spring, buffer assembly, stock spacer and screw and a storage pocket.