Using shims to time a muzzle device with Alexander from Gemtech.
Alexander from Gemtech provides expert guidance on correctly timing muzzle devices, especially for suppressor compatibility. He details why standard crush washers are problematic and demonstrates the precise use of Gemtech shims on a Daniel Defense 300 Blackout SBR. The instruction emphasizes achieving proper alignment to prevent baffle strikes and ensure suppressor longevity, utilizing an armorer's wrench and Loctite for a secure installation.













