Sure Cycle Benelli SBEII/M2 21mm Threads All Loads

Sure Cycle Benelli SBEII/M2 21mm Threads All Loads. The performance of your semi-automatic shotgun is only as good as the recoil spring tube system in the stock. The system is the heart and soul of your gun in essence as it controls how and when you get off that second and third shot. Harsh elements such as humidity rain and saltwater cause rust and corrosion which decrease the performance of your shotgun's recoil spring tube system and eventually cause it to fail.

The sure Cycle High Performance System has been designed and tested to completely eliminate the problems associated with rust and corrosion as it is constructed entirely of stainless steel components and will perform without fail for the life of your gun.
Specifications:

• Weight: 7 ounces
• Sure Cycle system for most Benelli shotgun with 21mm receiver threads - 12 gauge
• This system will not fit M4 or M1014 shotguns
• To best determine the proper thread size of a Benelli shotgun remove the stock and inspect the factory tube
• If the factory tube is steel the threads are 19mm
• If the factory tube is aluminum the threads are 21mm