Excellent product
Simple Installation - all you need is a 1/2" Forstner bit and you're good to go. Puts a sling swivel right where you want it. Great price too.
Works great
I can't say enough about how good this product is combined with the Magpul MOE forends. I will say that the plastic (on the MOE forend) is tough to cleanly drill through. The manufacturer had a lot of good information on how to get this done right on their site.
Brilliant idea
For Troy Alpha: It doesn't get better. Much cheaper and much lower profile than the Troy part (in fact hardly noticeable on the Alpha when QD not inserted). For MOE handguard - carbine. Use a Forestner bit to drill. If you don't want to overlap the rear slot, you can drill the hole on on the 45 degree section (10 o'clock). Perfect location, out of line of sight, but also completely out of the way of support hand.
Cool idea
Used on a Troy Alpha and Magpul MOE. Put the spiro-lock on the higher recess and the mount is almost imperceptible on the Troy when not in use. Search on line for install instructions for MOE or other plastic handguards. Suggest using a Forstner style bit to drill. The Magpul stuff is tough is cuts slowly - be patient. A very cool product. Why didn't someone think of this years ago?