SALE Quick view Techwell JP GMR-15 - Black PCC TECHWELL for JP GMR-15 (for 9mm Glock mags) Lightning-Fast Mag Changes. 60 Second Slide-On, One Screw Installation. Requires no gunsmithing, or alterations to the receiver. 5/64” Hex Wrench... MSRP: Was: $85.00 Now: $75.99 Out of stock