Perfect for assembling a new build or upgrading an existing rifle – it’s compatible with most mil-spec upper receivers on the market.Installs easily, just like our SPEAR M-LOK rail – you’ll only need a few simple tools to get the rail installed.Handguard uses screws to clamp around the barrel nut, with anti-rotation tabs and anti-slip screws that ensure a rock-solid lockup.Picatinny top rail perfectly aligns with AR-15 flat-top upper receivers, both forged and our AT3 Billet Upper.Durable 6061 aircraft aluminum alloy construction – designed to take a beating.5 Integrated non-rotating QD Sockets for a variety of sling configurations.This rail is lightened down all four sides of Picatinny Rail, making it lightweight while still remaining solid for all your favorite accessories.If you’re planning a build without a Front Sight Base, make sure you pick up a Low Profile Gas Block with the handguard. The Pro Series Rail comes in 7″, 9″, 12.5″, and 15″ inch lengths, making it ideal for upgrading existing guns or starting fresh with specialized AR15 builds. It uses the same simple installation as our SPEAR M-LOK handguard, has plenty of lightening for maximum comfort, and it works with Mil-spec uppers, as well as our Billet Upper to match the sleek contours. That’s what we offer with the AT3 Pro Quad Rail. The quad rail is still the gold standard of secure accessory mounting, but they’re in desperate need of a reboot. The New and Improved Pro Quad Rail – Lightweight, Rigid, and Easier to Install

12 slim free float handguard