The IWI HUB+ mounting system is an enhancement of the universally recognized HUB (1.375×24) rear thread pattern. The inclusion of a taper surface for greater engagement between mount and silencer provides for a rock-solid attachment and the best efficiency and consistency for the muzzle and suppressor interface. IWI Silencers are reverse compatible with existing HUB systems. 

Features:

• Materials:: 4140 Nitrided Steel
• Weight: 3.5 oz
• Muzzle Attachment: Direct Thread
• Color: C-Series Cerakote Black
• Full-Auto Rated: Yes