The Magpul PMAG M3 .223 Rem/5.56 NATO 20 RD Magazine in black features an over-travel insertion stop on the spine. This great 20 round Magpul magazine with Long life USGI-spec stainless steel spring features Constant-curve internal geometry for smooth feeding. The Anti-tilt self-lubricating follower increases reliability and the Flared floorplate aids magazine handling. The next-generation PMAG 20 GEN M3 with impact and crush resistant polymer construction features Paint pen dot matrix panels on the bottom of the body.  This high-quality Magpul magazine for AR15/M4 compatible weapons has tool-less disassembly for easy cleaning.