A tapered screw drives the patented PLANAR-LOK outward causing barbed teeth to bite into the interior sidewalls of the frame, locking the ANCHOR into place. This patented design eliminates inward wall flex preventing magazine bind, even with large capacity magazines. The MAGWELL dovetails into the ANCHOR at the rear, as its tooth bites into the front of the frame. The patented ANGLE-LOK detent drives the MAGWELL rearward into position, completing the systems three-way lock up. Specifications for Radian Weapons Magwell for Glock 43x/48: Manufacturer: Radian Weapons Color: Bronze Finish: Hard Coat Anodized Fabric/Material: Aircraft Grade Aluminum Gun Make: Glock Gun Model: Glock 48, Glock 43X Frame Color: Magwell Package Contents: Radian Weapons Magwell for Glock 43x/48 1 ANCHOR 1 MAGWELL 1 ANCHOR SCREW 1 3/32in ALLEN KEY 1 RETENTION STUD & SPRING 1 RETENTION STUD TOOL