Absolutely fantastic as always - requires modification for wilson combat billet uppers - Geissele Super Modular Handguard Rail M-LOK MK8

I expected to have some trimming mating this with a billet upper, specifically Wilson Combat. The fit is close and just requires a few mm cut off the ears to clear. The anti rotation ears are still functional. Like Wilsom Combats handguards, this uses a 30mm wrench with the tab which many may have already but if not, you'll have to purchase it separately. Mine unfortunately did not come with the gas block or the swag but I'm using the Wilson low profile block and it clears fine. Overall, great stuff and it's as solid as I would expect. Optics Planet came thru on shipping yet again!