You can find the Fortis Camber AR-15 M-LOK Rail 15.3" here Fast FREE shipping on this item!

The Fortis Camber AR-15 M-LOK Rail features the new Camber Lock mounting system and is the next evolution of the Fortis handguards. The Camber Lock is one of the industries' most solid mounting systems available. The stainless steel barrel nut & locking camber nuts are purpose built for rigidity & weight savings. The handguard has M-LOK slots in the 3, 6 & 9 O'clock positions with additional MLOK slots at the 1:30, 4:30, 7:30 & 10:30 positions for mounting lights and other accessories. The top of the handguard features a continuous Picatinny rail. The handguard is machined from 6061-T6 Aluminum and Type III Hard-coat Anodized. Installation requires a high quality castle nut wrench (not included) and the included T30 Torx L-Key. This rail system is very easy to install and more importantly, remove to service your weapon. Made in the USA.

Length: 15.3" (mates perfectly with a 16.1" Barrel)
Weight (handguard): 9.98oz
Weight (barrel nut): 2.9oz
Internal Diameter: 1.34"