The FPM Gunworks Whistling Bunghole is a blast-forward muzzle device for 36 caliber (9mm) barrels, machined from 17-4 stainless steel with 1/2x28 threads and a Black DLC finish. It is a standalone muzzle device and is not a suppressor.
- Manufacturer Part # : WBH3612X28SSBLKDLC
- Model : Whistling Bunghole
- Type : Muzzle Device
- Caliber : 9mm
- Thread : 1/2x28
- Material : 17-4 Stainless Steel
- Finish : Black DLC
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