THIS WILL NOT WORK ON SQUARE CUT REAR RECEIVER MAK-90, YOU WILL NEED M4-MAK! THIS DOES NOT WORK ON MILLED RECEIVER MAK-90 FITS MOST SLANT CUT CHINESE AKs Attach most M16/M4 style braces or stocks to your favorite MAK-90 rifle! JMAC's M4-MAK Stock/Brace adapter is very unique in the way it mounts to the rifle! JMAC completely replaces the factory T-Nut with their proprietary mount and is INCREDIBLY STRONG! Because it replaces the T-Nut you dont need any special adapters for the various fixed stock trunnions. Why buy JMAC's ? Its incredibly strong, machined from 7075 and hardcoat anodized, offers an optimal cheek wield for irons and red dots, has Mfg: Jmac Customs