This Leapers MNT-P503 UTG H&K G36 Handguard Picatinny/Weaver Rail Set Comes with Two 3-7/8" and one 6" long picatinny weaver rail. Each UTG G36 Picatinny rail set has numbered slots and two, three screw holes with recess housing. Compelte with 7 screws in total. Excellent quality and pricing. This Creative 3 piece rail system, accepts all varieties of scopes, tactical flashlights and lasers. Perfect mount for any HK rifle SL8, MP5, G3, G3A3, etc. Additional STANAG dimension for most versatile applications. Great new gen look at the most affordable price. UTG Limited lifetime warranty. Note Some Modifications May Be Necessary For Some Applications.