At first I could not believe it would fit my stock. Then I realized the straps were adjustable at both ends. I was able to put an adjustable wrench, screwdriver with multiple bits, toothbrush, and a Boresnake in the pouch. I was surprised it was not big enough for a Mildot Master but I just slid between the stock and the pack. I was very pleased with the entire setup. I also added 1/2 inches of foam underneath to get my eye relief perfect on a B&C Medalist A2.