The Backstrap Channel Insert was developed by DEEP6COMP™ with input from the Israeli Security Forces. Testing and final approval was done by the Isreali Security Forces. The Backstrap Channel Insert was designed to guide the mag into the mag well to stop the magazine from snagging on structures within the Glock. The secondary function of the insert is to stop dirt and debris from entering the backstrap channel; this stops the dirt and debris from potentially interfering with the trigger mechanism.

Fits MODELS 17,18,19,20,21,22,23,24,25,31,32,34,35 - (with slight receiver modification 26,27,28,33)

Important Note: The Backstrap Channel Insert for Glock Models G-29, 30 & 36 costs an additional $2.00 The BCI for the G29,30 & 36 is not pictured.

Sorry, none of these BCIs will fit the G21SF or G30SF guns.