MDT SRS-XF Premier Folding Buttstock Black. Features of MDT SRS-XF Premier Folding Buttstock Qd sling cups Adjustable lop via spacers (x4 included - m-lok slot under buttstock Adjustable slim cheek riser Weight compatible Reversible folding directions Compatible with adjustable buttpad Lock in folding positions Package Contents: MDT SRS-XF Premier Folding Buttstock T-Handle Ball End Hex Key 4x Length Of Pull Spacers 2x #10-32 x 1.25in Screws MDT 114484-BLK: SRS-XF Premier Folding Buttstock Black