AR15/M4 Gunsmithing Tool Kit includes many of the AR15/M4 specific tools that you may need to work on your rifle/carbine. We've included many of the AR15/M4 tools that you may need to assemble your AR from a stripped lower receiver and for attaching all kinds of after market accessories to custom configure your rifle/carbine to you specific needs. The tools are organized on a large Tan Cleaning Mat that can be rolled up with the tools secured into a compact package. The large Cleaning Mat will keep your work area clean, after you have worked on your rifle/carbine. The Cleaning Mat is 36" X 29" with hook and loop straps to secure kit -Tan TARW2 - AR15/M4 Armorer's wrench with various types of barrel nut, castle nut, muzzle brake, buffer tube wrenches and more! TARHR - AR15/M4 Handguard removal tool, TARFSCT - AR15/M4 A1 & A2 Front Sight Adjustment Tool, Brass & Nylon Hammer with wooden handle, and Nylon Cleaning Brush - Broad and Narrow bristles brush heads. 5/64" steel punch - for Gas Tube roll pin, 3/32" steel punch - for Bolt Catch roll pin, 1/8" steel punch - for Trigger Guard roll pin 1/4" & 5/16" brass punches, 7/32" & 5/16" plastic punches.