Q LLC Whistle Tip Blast Mitigation Device QD Black PVD 1.85in L 1.16in D for Cherry Bomb Brake. It also serves as a Cherry Bomb thread protector. As you've come to expect the WHISTLE TIP features a taper mount for proper alignment to the Cherry Bombs and installs with any off the shelf 1-inch wrench. This will not fit onto the XL Cherry Bomb (M18-1.5) Specifications for Q Whistle Tip Blast Mitigation Device: Manufacturer: Q Length: 1.85 in Finish: Copper Outer Diameter: 1.16 in Gun Model: Universal Condition: New Condition Quality: Excellent Color: Copper Condition Details: Other Fabric/Material: 17-4 Stainless Steel Gun Make: Universal Package Contents: Q Whistle Tip Blast Mitigation Device What firearm models does the manufacturer say Q Whistle Tip Blast Mitigation Device is compatible with? The manufacturer says that Q Whistle Tip Blast Mitigation Device is compatible with UniversalQ WHISTLETIPPVD Whistle Tip Blast Mitigation Device QD Black PVD 1.85