The PMAG 10 LR/SR GEN M3 7.62x51 NATO/308 Win, 10rd magazine for SR25/M110 pattern rifles in the smallest possible magazine size. Optimized for use with 7.62x51 M118LR or other .308 Win ammunition with a max OAL of 2.830". Features anti-tilt, self-lubricating follower; stainless steel spring for corrosion resistance; flared floorplate and impact/duct cover. *Note- compatible with older model Bushmaster .308 ORC, Remington R-25 and DPMS LR308 rifles, but not optimized for bolt lock functionality with newer models based on the DPMS GII design. NOT compatible with Armalite AR-10B, Springfield Armory M1A, Rock River Arms LAR8, FN SCAR 17S, PTR-91, HK417 or any other rifles that utilize M14, FN FAL, or HK 91/G3 patterned magazines. To accommodate longer than SAAMI-spec match ammunition, this magazine may not drop free from all makes of lower receivers. Made in the USA