🔥These fit perfectly into any of the mk16 style Geissele rails I sell. Or are ideal for any standard mlok rail 🔥 Features & details Perfect Multi-slot Rail Sections: 13-slot 7-slot 5-slot 3-slot rails designed for use with all compatible standard handguards, four different lengths give you 4 choice. Rails are essentials for hunting shooting! Ideal for Attaching Kinds of Picatinny Accessories: Picatinny rails allowing you add on any standard 20 mm picatinny accessories. Premium Craft & Aluminum, Solid& Durable Material: Precision machined out of premium T6-6061 aircraft aluminum alloy & high strength steel in black matte anodizing finish, offer durable safe performance in using. Easy To Install: Install these screws by allen wrench tool, simple to install or remove. Lightweight & Solid-Style: Super lightweight but solid aluminum structure and low profile design reduces bulk, 13-slot weight 1.83oz, 7-slot 0.78oz, 5-slot only 0.66oz, 3-slot only 0.36oz. Without adding too much useless weight and bulk when shooting. Tags - please ignore this: Eotech 558 XPS XPS-2 EXPS 3x Magnifier G33 flip to side combo black tan 4x zoom trijicon mr 4x acog PEQ-15 green red laser lumen lumens peq La-5c peg15 block | Block II block 1 block 2 suppressor silencer noveske amplifier sniper unity magpul mbus rcnc 416 Tracer Silencer keymod mlok m-lok tr str prs vltor hanguard