Choate Tool Moss. 930 Combat Bolt Handle. They are made of heat treated steel treated to a hardness of 54 Rockwell. The combat bolt handle allows you to quickly manipulate the bolt of your semi-auto shotgun regardless of firing position. No gunsmith required. Simply pull out your old bolt handle and push in the new one. Specifications for Choate Tool Mossberg 930 Combat Bolt Handle: Manufacturer: Choate Tool Gun Model: Mossberg Model 930 Magazine Capacity: 0 Round Country of Origin: USA Package Contents: Choate Tool Mossberg 930 Combat Bolt Handle What firearm models does the manufacturer say Choate Tool Mossberg 930 Combat Bolt Handle is compatible with? The manufacturer suggests that Choate Tool Mossberg 930 Combat Bolt Handle is compatible with Mossberg Model 930Choate Tool CMT-02-10-02: Moss. 930 Combat Bolt Handle