Rendered gun non-functional - Agency Arms MW-G17G4-NBS Magwell Compatible With Glock 17 Gen4 6061-T6 Aluminum

Having installed other Agency Arms magwells on Gen4 Glocks, I was surprised at the difficulty of seating this magwell. When installed in exactly the same way as my G19 AA magwells, this one would not allow the OEM G17 mags to seat (or 2 other non-OEM mags) to seat in a Gen 4 G17. Each mag was unable to travel far enough into the frame for the mag to seat. There was also daylight between the front of the frame and magwell even when installed as far into the frame as the magwell will go. This part is clearly out of spec, and demonstrates a lack of QC. I can no longer recommend this product as it renders the pistol a single shot.