Milsig Valken M17 A2 Milspec Barrel Nut Adapter
This adapter lets you attach an AR15 handguard to any MILSIG marker without any modifications. Now you can add shrouds from popular brands like Fortis, Noveske, Troy, Crown Arms, and more. Compatible with MILSIG M17 and Valken.
Depending on your handguard barrel nut internal diameter size that you are installing, your barrel may not work. If the barrel nut is 1.1” or smaller your stock will not fit. You will need to get a replacement barrel that is 7/8 outside diameter.