Radian Weapons Anchor w/Magwell Glock 19 Gen 5 Glock 23 Gen 5 Glock 44 Gen 5 Glock 49 Gen 5 Black. 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 Glock Anchor w/Magwell: Manufacturer: Radian Weapons Gun Make: Glock Gun Type: Pistol Package Contents: Radian Weapons Glock Anchor w/Magwell 1x Planar-Lok Screw 1x 3/32in Hex Key 1x Angle-Lok Spring 1x Angle-Lok Detent 1x Angle-Lok Tool What firearm models does the manufacturer say Radian Weapons Glock Anchor w/Magwell is compatible with? The manufacturer says that Radian Weapons Glock Anchor w/Magwell is compatible with Glock 23 Gen 5 Glock 19 Gen 5 Glock 44 Gen 5 Glock 49 Gen 5 Glock 17 Gen 5 Glock 34 Gen 5 Glock 45 Gen 5 Glock 47 Gen 5Radian Weapons R0947: Anchor w/Magwell Glock 19 Gen 5 Glock 23 Gen 5 Glock 44 Gen 5 Glock 49 Gen 5 Black