Rise Armament RA905135BLK: More versatile than a Swiss army knife and nearly as light the RA-905 Handguard combines all the features you want in a handguard. Durable yet lightweight, it is M-LOK compatible with a Picatinny upper rail. It even boasts six quick-disconnect mounting points that span 360 degrees around the handguard for maximum customization. The slip-on handguard is simple to install, and its free-floating design helps increase accuracy. The slim center is easy and comfortable to grip for more controlled, accurate shooting.