The GSTC Butt Cover is a replacement gun cover for our packs with wide scabbards (GS05, G2, G3, G4, etc). It can also be paired with wide-scabbard packs that are sold without the GSTC, such as the X3.
*Please note: In order to match the accessory you order with a pack you already own, please look at the buckles on your pack. Champion buckles are embossed with the a small "WJ" on the back side of the female buckle, and the male buckles have a short middle fork. Stealth buckles have a fine printing of the word "Stealth" or "Stealth Warrior" on the buckles, and have a middle fork that's about the same length as the outer forks. If you're ordering the accessory along with a pack, don't worry; we'll take care of the selection for you.