TANDEMKROSS ADX SBR

The ADX SBR is the short-barreled-rifle version of TANDEMKROSS's ADX line: the same ADX receiver, Manticore X Lower, and folding stock as the Race Rifle, with the 10.2-inch Comet barrel in place of the 16.5-inch Spitfire. The ADX receiver puts the charging handle on the left side, where lifting it into a steel-reinforced notch locks the bolt open and a slap closes it, and a removable rear cap lets the bolt and charging handle slide out the back for cleaning. Three pins field strip the whole receiver.

The Comet barrel is a tensioned stainless barrel inside an M-LOK-cut aluminum sleeve, twisted 1:16 and threaded 1/2x28, which makes the SBR a compact rimfire suppressor host with M-LOK real estate on the barrel itself. The Manticore X Lower brings a pull-weight-adjustable trigger, ambidextrous rotary safety, bi-directional magazine release, enlarged bolt lock, and a reversible QD sling socket, and two self-retaining pins separate the upper and lower. The integral extended Picatinny rail carries the optic, and the receiver wears a Teflon-impregnated hardcoat black anodize.

The Rim/Edge folding Picatinny buttstock folds left in the inline position, reverses to fold right, and resets to a 12-degree drop; a buffer tube mount in the box takes telescoping AR-style stocks. The SBR measures 27.25 inches open and 19 inches folded, weighs 52.1 oz unloaded, and feeds from Ruger 10/22 magazines with one DoubleKross magazine included. With a 10.2-inch barrel and a shoulder stock, it is a short-barreled rifle under federal law, and TANDEMKROSS ships it only to a dealer holding SOT status. It does not ship to California, Colorado, Connecticut, Delaware, Hawaii, Illinois, Maryland, Massachusetts, New Jersey, New York, Oregon, Rhode Island, Vermont, Washington, or Washington DC.