The SPIRO is a low back pressure gas gun suppressor that has excellent sound suppression levels at both the muzzle and at shooter’s ear. No longer do you have to compromise and have your gas gun suppressor be “Low back pressure but loud at the muzzle.”

People have been talking about “low back pressure” for a while, but there hasn’t been an objective method to actually quantify it. We weren’t satisfied with that, so went back to basic science and developed a way to directly measure back flow in a gas gun. We then used the same sound-test setup from the Silencer Summit to develop a very low back-pressure suppressor that is quiet at the muzzle and at the shooter’s ear position.

For full details, including comparative suppression data and the back pressure measurement “white paper”, please SPIRO WEB PAGE, but here are the highlights:

• Initial version for .223/5.56
• Designed around the 5.56mm MK18 (10.3″)
• Quieter at the muzzle and ear, than a full-size DOMINUS, on a MK18
• Made of super-durable Haynes 282, will survive at least 20x 8-magazine SURG cycles on an 8″ barrel
• MSRP $995
• Initial versions will be Direct Thread (DT) or HUB (“Bravo” 1.375-24), SR versions to follow later this year