Magpul

:-Accepts snap hook style attachments such as HK hooks, MASH hooks, & the Magpul Paraclip™-Solid cast steel plate-Durable welded link ring-Mil-spec black manganese phosphate finish-Works with both mil-spec & commercial-spec carbine receiver extensionsNote: The ASAP is NOT compatible with A1/A2 fixed stocks as well as any other similarly mounted stock such as the Magpul PRS®, UBR®, & MOE® Rifle Stocks.