Alexander Arms Meg6517 OEM 6.5 Grendel AR-15 Magazine 17Rd Black Steel Detachable This Magazine features Heat-Treated Steel Body With a Durable Body Coating, Reinforced Floor Plate tags, Steel Floor Plate With Integral Locking Plate, And Fully-deburred Feed lips. It Also Has State-Of-The-Art And Anti-Tilt Follower. Caliber: 6.5 Grendel Capacity: 17Rd Model: OEM Material: Steel Model Fit: AR-15 Capacity: 17 Manufacturer: Alexander Arms Mfg Number: Meg6517 Model: OEM