The Geissele Automatics ICM (Intermediate Cartridge Magazine) 25-Round Stainless Steel Magazine is ultra-durable and purpose-built to ensure flawless feeding in demanding environments. Designed from the ground up for AR-15 platforms chambered in intermediate calibers, it is mathematically optimized for 6mm ARC, .22 ARC, and 6.5 Grendel cartridges. The magazine features a robust, one-piece construction crafted from 410 stainless steel with a sleek black finish for superior corrosion resistance. It relies on a heavy-duty stainless steel square spring and specialized anti-tilt follower that positions the cartridge at a more upright angle to eliminate common feeding failures. Proudly made in the USA, this full mil-spec compatible magazine offers a bombproof construction that holds up perfectly under heavy field use. Geissele Automatics ICM Intermediate Cartridge Magazine 25rd Stainless Steel Black Magazine 05-3619