Thunder Beast: Fly 9 Suppressor

Thunder Beast
Current Stock:

The FLY 9 is configurable in two lengths: Long and Short. The Long configuration is lighter by at least 20%, in many cases 35% or even 50%, than other full-size 9mm suppressors. It measures at 7 inches and weighs only 7.9 ounces in the Long configuration, including the booster, piston, and spring. In the Short configuration, it's simply shorter and lighter than anything else out there. Including the piston, it's 4.4", which will typically add about 4.0" to the OAL of the pistol. It weighs only 5.5 ounces, and that includes a 17-4 steel piston (1/2-28 for weight reference). The FLY 9 is strong. TBAC's test regimen was three 32-round Glock magazines fired from a select-fire subgun: the first two mags bursts, and the last mag full auto. The Fly 9 was torture tested for 30 cycles and the suppressor was perfect afterwards. 

The FLY 9 is rated for .300 Blackout SUPERSONIC ammunition from 8-inch and longer barrels, and .300 Blackout SUBSONIC ammunition from 5.5-inch barrels and longer. The FLY 9 is also rated for 350 LEGEND from 16" barrels and longer. The FLY 9 ships with a 1/2-28 piston and a fixed barrel spacer (spring replacement). The rear of the suppressor body is threaded 1.125" x 28tpi, so it can use Rugged, Silencerco, or other compatible adapters for Tri-lug, direct thread, etc. 



  • Caliber: 9mm, .300 Blackout, .350 Legend
  • Material: Titanium
  • Length: 7 inches, 4.4 inches (short config)
  • Diameter: 1.39 inches
  • Weight: 7.9 ounces, 5.5 ounces (short config)
  • Mount: 1/2-28 piston and booster included; also fixed spacer
  • Finish: High-Temp CeraKote: Black 
  • Use: Full-auto 9mm; .300 Blackout and .350 Legend, semi auto


Minimum Rated Barrel Lengths

  • "Any Length" 9x19
  • 5.5" .300 Blackout (subsonic)
  • 8" .300 Blackout (full power / supersonic)
  • 16" 350 Legend




TBAC Fly 9 Suppressor Comparison Matrix




Once your suppressor purchase is finalized with Mile High Shooting, a Form 3 will be filed with the ATF requesting approval to transfer your suppressor to your chosen FFL. Initial processing can take 3-7 business days. Customers may help expedite this time frame by requesting the chosen FFL to send a copy of their FFL & SOT to Please note, initial processing time may be delayed further if your chosen FFL fails to provide required documentation in a timely manner. Once submitted, it takes 7-21 days for Mile High Shooting to receive the Form 3 approval. As soon as the approval is received, your suppressor and any accessories will be shipped to your chosen FFL within 24-48 business hours by 2 Day Air. Your chosen FFL will then contact you once it is received and you may complete your Form 4 processing at their facility. 

___LEGAL INFO______

Mile High Shooting Accessories (MHSA) will only ship suppressors to Class III FFL holders. BATF regulation information for Suppressor ownership are as follows:

Be at least 21 years of age.
Be a U.S. citizen. 
Have no felony convictions or domestic violence convictions. 
Have no dishonorable discharge. 
Not deemed mentally unstable by a competent authority. 

The NFA rules/laws are posted through the BATF website
At this time, the following states DO NOT ALLOW private ownership of suppressors: CA, MA, DE, HI, NJ, NY, RI, IL, District of Columbia. CA allows class 3 dealers and class two manufacturers to possess suppressors.




  U.S. Government Export Restriction

This item is restricted for export by the State Department and Department of Commerce. Make sure that you are familiar with all applicable laws.  ITAR Information.


FFL Requirements & Magazine Restrictions

This item has to ship to an FFL. Please read the attached information. Shipping Rules & Magazine Restrictions.