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.
Made in the USA
The original Magblock 10/30 MCL (Magazine Capacity Limiter) for USGI 30 round magazines in .223/5.56mm. (These are your standard metal AR15 magazines as shown in the photo.) This block will sit on the base of the magazine inside the spring and convert a 30 round magazine to hold only 10 rounds. Does not affect reliability or magazine function. No increase in spring pressure which would reduce spring life. Can be cut down to fit some 20 round USGI magazines. See our website FAQ page for more details at http://www.MagazineBlocks.com/magento/faq