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These compensators are specifically designed for the Sig P320 and our Barsto aftermarket barrel with compensator threading, in 1/2 x 28. Will NOT work with the SIG factory threaded barrels. Designed to also work with most factory ammunition. Made from USA sourced aluminum and matte black anodized for a light weight, long lasting compensator to tame muzzle flip and soften recoil. .852oz
**THIS COMP IS NOT FOR USE WITH SIG FACTORY THREADED p320 BARRELS