This is a Magpul Industries Magazine known as the PMAG chambered in 308 Winchester, model MAG579-BLK.
A larger-capacity variant of the proven PMAG 5 7.62 AC" the PMAG 10 7.62 AC is a reliable and durable polymer magazine for .308 Winchester based family of cartridges. Compatible with short action AICS-spec bottom metal to include the Bolt Action Magazine Well for the Hunter 700 Stock" the PMAG 10 7.62 AC brings additional capacity in an affordable and reliable package. Featuring GEN M3(TM) technology" a paint-pen dot matrix for visual identification" and a flared base plate for positive control and ease of retrieval" the PMAG 10 7.62 AC sets a new standard for bolt action magazines.
Features:
10RD capacity
Polymer construction
Self-lubricating follower
Accepts cartridge OAL up to 2.86";Flared floorplate;Stainless steel spring