Both A2 fixed stock and adjustable carbine stocked Bushmaster/Windham A2 police rifles $760-770. Honestly I'd buy one of these as a cool retro AR if I wasn't waiting on a Galil Ace for my birthday gun lol.
https://suarezinternational.com/dep...aster-xm15-e2s-rifle-16-barrel-carbine-stock/
https://suarezinternational.com/dep...aster-xm15-e2s-rifle-16-barrel-carbine-stock/