GSL P-90 Silencer

The GSL Technology P-90 silencer is the only suppressor on the market designed from the ground up for the P90 and PS90 SBR. The 12x1mm left-hand bi-lock QA mount system was engineered specifically for the P90 platform, and the 32 dB sound reduction figure is the best published for any 5.7x28 can. Full-auto rated for the registered DOD/agency P90 hosts, with a dry-fire-only restriction (no oil, no wet-fire).

This can is platform-locked. It mounts to the GSL bi-lock QA system that interfaces with a 12x1mm LH threaded SBR PS90 or P90 barrel. That means the host needs to be SBR-registered with a CMMG short-barrel kit or equivalent that exposes the proprietary mount; it will not bolt onto a 16-inch civilian PS90 with a 1/2x28 threaded shroud. The QA mount is fast, repeatable, and rigid, but it is also incompatible with any other host or any other suppressor mount in the user's safe.

At $1,067 plus the SBR Form 1 (the SBR tax is also zero under OBBBA), this is the premium pick for owners who already plan to run a registered short-barrel PS90 and want the quietest 5.7x28 can ever produced. For any other use case, the Mask HD or Flow 22 Ti are better fits.