Radian Weapons Anchor Magwell Glock 43x 49 Bronze. 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 it's tooth bites into the front of the frame. The patented ANGLE-LOK detent drives the MAGWELL rearward into position completing the system's three-way lock up. Fits OEM Glock 43X and G48 Frames OEM magazines and OEM base pads are compatible with the ANCHOR + MAGWELL. All Shield Arms S15 magazines Gen1 2 & 3 are compatible with the ANCHOR + MAGWELL with Radian base pads. Gen 1 Shield Arms S15 magazines will only fully seat with the steel Shield Arms magazine catch when using Shield Arms base pads. Radian base pads will function with either a steel Shield Arms magazine catch or an OEM magazine catch. Gen 2 Shield Arms S15 magazines will only fully seat with Radian base pads and will function with either a steel Shield Arms magazine catch or an OEM magazine catch. Gen 3 Shield Arms S15 magazines will only fully seat with the steel Shield Arms magazine catch when using Shield Arms base pads. Radian base pads will function with either a steel Shield Arms magazine catch or an OEM magazine catch. Specifications for Radian Weapons Anchor Magwell: Manufacturer: Radian Weapons Finish: Hard Coat Anodized Fabric/Material: Aircraft Grade Aluminum Gun Make: Glock Gun Model: Glock 48 Glock 43X Package Contents: Radian Weapons Anchor Magwell Anchor screw Allen key Retention stud What firearm models does the manufacturer say Radian Weapons Anchor Magwell is compatible with? The manufacturer suggests that Radian Weapons Anchor Magwell is compatible with Glock 43X Glock 48Radian Weapons R0911: Anchor Magwell Glock 43x 49 Bronze