Perfect fit and easy install on sig m400 tread! - Samson SXT AR-15 M-LOK Handguard

The Samson SXT AR-15 M-LOK 15” Handguard looks great as a replacement for the stock 13” that came on my M400 Tread. It came with the same barrel nut as the stock handguard. So, no need to remove the factory installed barrel nut (or the gas block!) from the rifle; just needed a 5/16” hex key to remove the set screw that held the barrel nut onto the Samson SXT - and then remove the barrel nut that shipped installed on it. Once that was removed, the handguard slipped right on, over the gas block, and only two hex screws need to be tightened to install it. SUPER EASY! Just don’t over-tighten the hex screws. Snug each one with “light-moderate” tension, going back and forth between the two, until you can feel them “seat” (bottom out). That’s it! Would definitely recommend this if you prefer a full Picatinny rail.