It fits only Hatsan or any other BB gun with external male 1/2x20 UNF RH thread on the barrel. The barrel should have external male 1/2x20 UNF RH right thread. Please check it before making purchase.
For 4,5 mm bbs. Maximum inner hole diameter 8 mm.
For Drozd standard barrel we offer muffler with adapter - please check out my catalog.
Custom silencer muffler for Hatsan and any 1/2x20 UNF thread barrels. Made in Izhevsk, Russia.
This supressor reduces the sound of the shot significantly. Your BB gun will shoot almost silently.