ACE Modular M4 SOCOM Collapsible Buttstock for Modular Receiver Blocks Aluminum Matte
NOTE: This stock is designed to handle the recoil of calibers up to and including the 7.62x39mm Russian. Damage caused by use with guns producing heavier recoil is NOT covered by the factory warranty. ACE specifically advises against the use of the following calibers with this buttstock: 450 Bushmaster, 458 Socom, 499 LWRC, 50 Beowulf, 50 BMG and 12 Gauge.
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