The Agency Arms 417C Compensator is threaded with the standard 1/2×28 thread pitch. It features a 2 chamber design (2 vertical ports and 2 side venting ports. It is designed to utilize the OEM recoil spring assembly and it also features a front sight hole” allowing you to transfer your existing front sight from your slide to the comp. The 417C is specifically designed for the Glock(R) 43
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