The Sidewinder comes in two sizes: the ERM Sidewinder is an AR rifle-sized case, and the ESM Sidewinder is a Shotgun and Scoped Rifle Case. It’s an excellent way to add a gun carrier to the R3 UpRanger Pack™ or Bang Bang Range Bag™. Each can be self attached to MOLLE on packs. These high quality cases have a unique sleeve for cleaning rods, giving the shooter secure, quick access to their firearms maintenance tools.