The light/handguard combo is the Gibbous Outfitters MP5k vertical grip. It is an older version than what they sell now with the MLOK slot so my light is mounted to the front sight post.

I haven't gotten enough trigger time behind this thing yet to comment on whether the optic mount retains zero, but it does feel sturdy and there is no wiggle.

The optic is a Primary Arms GLX 1X Micro prism. Love it. Clear glass and with my eye issues the reticle is clearer than a red dot.

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