KelTec is where the modern Sport Utility rifle was reinvented and the SU16A is where it all began. Chambered in 5.56 NATO, it’s the go-anywhere utility rifle. It features a magazine storage stock that holds two proprietary 10-round magazines. The forend covers an 18.5″ barrel and doubles as a bipod. Although the SU16 models come with adjustable sights, the receiver offers an integrated Picatinny-style rail for mounting an optic.