The PMAG 5 7.62 AC, 5rd magazine is compatible with short action AICS (Accuracy International Chassis Systems) pattern bottom metal and cartridges built on a 0.470" case head such as 7.62x51/308 Win, 7mm-08 Rem, 6.5mm Creedmoor, 260 Rem, 243 Win and others. Accepts a cartridge overall length of up to 2.86"Features GEN M3 technology, a paint-pen dot matrix for visual identification and a flared base plate for positive control and ease of retrieval. *Note- not compatible with smaller base diameter cartridges such as .220 Swift, .223 Rem, .300 AAC Blackout, etc. or larger short action magnums. In addition, due to the wide variety and potential combinations of aftermarket receivers, stocks, chassis and bottom metal that accept AICS pattern mags, minor fitting may be required. Not compatible with Accuracy International AE rifles or semi-auto platforms utilizing SR25/M110 pattern magazines. Made in the USA.