The SXT Series Handguards feature a free-floating AR-15 handguard with an M-LOK attachment system.The simple clamping system uses two cross bolts which fit into the barrel nut for a rapid and easy installation. (The old SXS Series clamping system used a bias block on the bottom to secure the forearm to the barrel nut which required knurling).Samson Manufacturing is a New Hampshire based company focused on producing quality firearm parts and accessories.They primarily specialize in the AR-15 market and also has a diverse product line including: Kalashnikov handguards optics & magnifier mounts fixed & folding rifle sights and much more.Samson utilizes state of the art engineering and CNC machining techniques to ensure that all of their products exceed industry standards. Best of all their products are American made.Features / SpecsModel: SXT HandguardSeries: M-LOKFinish: Black AnodizedMaterial: 6061-T6 AluminumFirearm Type: AR-PlatformLength: 15"Free Floating: YesIncludes: Hex Wrench Barrel Nut Barrel Nut WrenchMount Type: Clamp