This unit replaces the magazine base plate on the sig p365 (10 rd magazines).This extension does not alter the capacity of the magazine.It adds approximately 5/8" additional gripping surface (1/4" longer than factory extension) as well as enhanced ergonomics.The enhanced griping surface also incorporates a texture which closely matches the frame of the firearm.

Caliber: Grip Extension
Capacity: Sig P365
Finish: Textured
Model: Sig P365
Material: Polymer
Model Fit: Sig P365