Video from Airsoft Innovations showing their XL Burst Impact Banger Grenade... "The XL Burst is our new loud and proud simulation flashbang. Made from fully CNC machined aluminum, this impact-activated grenade begs to get tossed, and only requires propane and dirt cheap burst elements. With a 125dBA bang, you'll know when it you hear it. Now Includes ONE XL Burst exclusive patch."