Installs in most USGI metal AR15 30 round bodies, reducing the magazine capacity to 10 rounds
Magblock 10/30 Magazine Capacity Limiter for USGI 30 round in .223/5.56mm.
Includes 3 in a pack
Works with most anti-tilt followers including upgraded Magpul, C-Products and Brownells anti-tilt followers. Older original standard issue GI followers may need modification to fit all 10 rounds. This involves trimming the spike off the bottom of the follower as shown in the image. See photos for instructions.