The Stag 15 M-LOK SL Handguard series offers fore-end versatility for the AR15 platform like never before. Using the M-LOK attachment sections, you can customize the setup of your handguard. Accepts M-LOK bumpers and rail sections. Includes barrel nut and wrench. This product is blemished. Blemishes may include:a Scratchesa Minor tool marksa Flaws in finishThese products are fully functional. If you don't mind a slight imperfection, this is the perfect product for you. We do not accept returns on blemished products.