Did not fit - AIM Sports Inc Keymod Handguard

The part itself came in excellent condition from Aim Sports. The description claims it fits Imperial and Metric. Unfortunately, it did not fit my Imperial kit on an Imbel receiver. I called Aim Sports and was advised that the part may require fitting and adjustment. After a few hours of struggling with it, frustration won and I stopped trying to modify it to fit. Unfortunately, their warranty does not cover unauthorized modifications and so now I have a paperweight.