The Dead Air Wolverine Thread Insert in .35 caliber with a 14x1mm LH thread pitch is specifically designed for Eastern European pattern AKs and most US-made or parts kit barrels. This versatile insert ensures compatibility with a wide range of AK variants, making the Wolverine one of the most adaptable silencers available. Designed to work seamlessly with the M14 Collar, this thread insert provides precision alignment and a secure fit for optimal suppressor performance.