ZEV Technologies Pro One Piece Magwell Compact Models Glock 19/23 Gen 5. The ZEV PRO Magwell was designed and tested for compatibility with standard capacity factory magazines. Specifications for ZEV Technologies PRO Compact Glock Magwell: Manufacturer: ZEV Technologies Color: Black Finish: Type 3 Anodized Fabric/Material: 6061 Aluminum Gun Make: Glock Gun Model: Glock 19 Gen 5 Glock 23 Gen 5 Model Generation: 5 Additional Features: Compact Models Will NOT work with Glock Gen 5 G17 Included Accessories: Standard Condition: New Features of ZEV Technologies PRO Compact Glock Magwell The mag-well is slightly flared at the base to be wider than the stock opening which is ideal for quickly inserting the magazine in the pistol during reloads helping build proper muscle memory for improved consistency and reload time NOTE: Back straps may need to be modified if used. Package Contents: ZEV Technologies PRO Compact Glock Magwell What firearm models does the manufacturer say ZEV Technologies PRO Compact Glock Magwell is compatible with? The manufacturer suggests that ZEV Technologies PRO Compact Glock Magwell is compatible with Glock 23 Gen 5 Glock 19 Gen 5ZEV Technologies MW.K-CPT-PRO-5G: Pro One Piece Magwell Compact Models Glock 19/23 Gen