The Tomahawk stock is a retractable, multi-position, compact stock, utilizing a MIL-SPEC bolt carrier group, the Tomahawk Standard (5.56/7.62) shortens overall length by 2" compared to an M4 stock. The impact-resistant, polymer cheek-piece with QD swivel mount provides stability and comfort; the aluminum thumb-latch and guide rails offer superior strength and five positions of adjustment. Features a Q.D. swivel hole for sling attachment and ultra lightweight polymer buttstock and continuous cheek piece. *Note: Not Compatible with TROY Ambidextrous Bolt Release.