- Next-generation impact and crush resistant polymer construction
- Modified dimensions allow for wider compatibility with non Colt-spec STANAG 4179 platforms
- Constant-curve internal geometry for smooth feeding
- Anti-tilt, self-lubricating follower for increased reliability
- Long life USGI-spec stainless steel spring, black-oxide coated (MIL-DTL-13924D)
- Over-travel insertion stop on the spine
- Ribbed gripping surface and new aggressive front and rear texture for positive magazine handling
- Flared floorplate aids magazine handling and disassembly yet is slim enough for use with many double and triple pouches
- Pop-off Impact/Dust Cover to minimize debris intrusion and for ammunition protection in storage and transit
- code MAG559