AR15 ARC Stock

thingiverse

A1-length buttstock designed for low prone shooting with 10- and 20-round magazines, perfectly fitting AR-15 and Airsoft M4 gas blowback (GBB) rifles. Universally compatible with rifle, commercial carbine, and mil-spec carbine buffer tubes, featuring flats on the underside for easy installation of Picatinny rails, monopods, and sling hardware. For a smooth installation on rifle buffer tubes, an upper buttplate screw is required and may need to be shortened for full buffer travel. To install on carbine buffer tubes, you'll need a nylon- or brass-tipped 1/4"-20 set screw and a long hex wrench; apply pressure while driving the set screw to create threads. A standard grip screw, washer, and lock washer are also necessary for installation. You may need to elongate the grip screw hole in the stock for a proper fit. Please note that updated models have been released, including a 1mm gap filled forward of the grip, relocated selector spring hole and grip screw, added ambi selector lever cutouts, and narrowed grip mount. If you've used these updated models, please share your experience by posting a comment or sending me a message to let me know if they improve or worsen the fit.