Red dot plate for Glock 43X MOS & 48 MOS | Holosun K-series footprint Benelli M4 Polymer magwell for FN 509T

Polymer magwell for FN 509T

Mounting hardware is included

3D contouring positions the hand consistently — grip pressure stays even through the full recoil stroke

Built-in barricade stop keeps the support hand locked against cover — prevents slipping when braced against obstacles

Adds 8 rounds of extra capacity

Red dot plate for Glock 43X MOS & 48 MOS | Holosun K-series footprint Benelli M4 Polymer magwell for FN 509TAircraft grade aluminium optics ready plate for the factory optics cut Glock 43 and Glock 48, compatible with any red dot sight built to the Holosun K series footprint whatever the optic's brand. It bridges the factory optics cut to the optic and holds it low and flush with no play or tilt. The full list of compatible pistols and red dot sights is below. Holosun K series footprint accepts any red dot built to this footprint, not just a single brand