MagazineBlocks.com Magblock 10 Round Limiter for Pmag 20 MOE/Gen2 (3 Pack) Installs in PMAG 20 round bodies, reducing the magazine capacity to 10 rounds Magblock 10/20 Magazine Capacity Limiter for Magpul 20 round Pmags in .223/5.56mm. Includes 3 in a pack Will NOT Fit Gen M3 Pmags. See our site for other products. Made in the USA