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Lower group designed for use with MkG .45 ACP Radial Delayed Blowback uppers. Accept Glock-pattern magazines while retaining essential AR15 features and function like last round bolt hold open. Available in Cerakote finishes. Includes RipStock, ZEROED Pistol Grip, ZEROED Ambi Safety (60/90 deg), and ZEROED AR15 Bolt Catch. Lifetime Quality Guarantee. MkG lowers are designed for use with MkG .45 ACP Radial Delayed Blowback uppers only.
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A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
A neutral guide to component strategies for left-handed shooters, left-eye dominant right-handed shooters, and those managing eye/hand dominance mismatches. Covers ambi uppers, charging handles, gas system tuning, and real-world tradeoffs.
6 min read