Our M-LOK 15″ extended rifle length free floating handguard for the AR15 platform is perfect for your carbine AR15 or SPR special purpose rifle or any other longer barrel AR15 for varmint hunting etc. Manufactured from T6-6061 billet aluminum, finished off in a Type-II matte black anodized finish. This 15″ M-LOK extended rifle length free float handguard includes everything you need for a proper install, minus the gunsmith tools. You get a steel barrel nut that requires no timing for the gas tube/gas block. You get 2 anti rotation screws that go underneath the handguard, to prevent it from rotating on the barrel nut. It includes 4 set screws that insert through the side, to lock into the barrel nut and secure your handguard in place. These handguards require no timing for the barrel nut making it extremely easy to install. They are lightweight, ergonomic milled style, and M-LOK porting with picatinny rails up top on the front and back. Please ensure your rifle accepts AR15 barrel nuts / handguards. Please ensure you have the tools for the job, if not, please have a professional gunsmith install it for you.