S2Delta Mg Lite BTS Buttstock Black w/ Cerakoat Gun Metal Gray One Size. Adjustable length of pull and cheek riser without tools. Manufactured from aluminum and fiber reinforced nylon. AR15 carbine interface but will NOT accommodate a buffer for semi automatic rifles. Features ambidextrous QD sling bases. Specifications for S2Delta Mg Lite BTS Buttstock: Manufacturer: S2Delta Gun Type: Carbine Gun Model: AR-15 Color: Black w/ Cerakoat Gun Metal Gray Finish: Cerakote Hand: Ambidextrous Stock/Brace Material: Magnesium Alloy Weight: 17 oz Features of S2Delta Mg Lite BTS Buttstock Tool-less length of pull and check rise adjustment Package Contents: S2Delta Mg Lite BTS Buttstock What firearm models does the manufacturer say S2Delta Mg Lite BTS Buttstock is compatible with? The manufacturer says that S2Delta Mg Lite BTS Buttstock is compatible with AR-15S2Delta MG-BTS-BLK: Mg Lite BTS Buttstock Black w/ Cerakoat Gun Metal Gray One Size