Manufacturer: Port City Armory FS30
Port City Armory's FS-30 is a 30 round, standard capacity magazine for the AR-15. Features include constant curve internal geometry, an anti tilt and self lubricating follower, a 17-7 stainless steel spring, and an easily disassembled floor plate. Proprietary materials were chosen to impart durability, heat and chemical resistance, and smooth operation. The exterior features and texturing provide a non slip grip. It easily seats on a closed bolt when loaded with 30 rounds, smooth feeding of all types of ammunition, and retention of rounds when impacted.
Specifications and Features:
.223 Rem/5.56 NATO