Rugged and well-designed, the Mission First Tactical Standard Capacity Polymer Magazine for 5.56x45 mm NATO cartridges (SCPM556) holds 30 rounds, and represents a cost-effective refinement of the ubiquitous aluminum magazines.
Already well-respected within the industry for its Hexmag AR-15 magazines, Sentry Tactical is now also producing larger detachable boxes compatible with .308 Win.-chambered SR-25/AR-10-platform rifles.
I have just started reading American Rifleman, and I love the technical information in the magazine. But it seems like you guys sometimes assume every reader knows what every gun term you use means. What is a magazine disconnect? Is it the same thing as a safety?