There are currently four G-Core suppressors covering .22 LR, .22 WMR, .17HMR, .300 BLK, 9mm, .40 S&W, and .45 ACP.  I’ve written a post exclusively on the GMT-300, and its incredible ability to suppress supersonic .300 BLK rounds to hearing safe noise levels, but this article will focus on the remaining family of G-Core suppressors.

The GM-22 is an amazing 2.5 oz.

The GM-22 disassembled to show the patented baffle.

Coming out of a major manufacturing upgrade including the latest Computational Fluid Dynamics (CFD) software, G-Core suppressors were put through Finite Element Analysis (FEA) ensuring the suppressors would be durable and light weight.  Rigorous live-fire testing completed the testing process.  The end result was that the G-Core line of suppressors are the strongest suppressors ever made by Gemtech, and according to Gemtech, the strongest suppressors on the market.

An angled view of the slim GM-22 with Gemtech machined logo.

Here are the common features on the GM-22, GM-9, and GM-45 G-Core suppressors:

• Full auto rated
• Material – 7075 aluminum
• Tube Finish – Matte Black Cerakote with reduced visual IR signature
• Core Finish – Matte Black Anodized (C3 Technology on GM-22)
• Gemtech symbol machined on the end cap

The GM-22 attached to a Walther P-22.

GM-22 Suppressor (rated for .17 HMR, .22 LR, .22 WMR)

• Length – 5 inches
• Diameter – 1 inch
• Weight – 2.5 ounces (incredibly lightweight – I’ve held pens that weighed more!)
• Core Finish – C3 Technology
• Mount – 1/2 – 28 TI Thread insert
• Sound Reduction – 36-39 dB
• MSRP – $395

The threaded end of the GM-22.

Foster explained that the C3 Technology prevents carbon build up from sticking to the suppressor core as well as most suppressors, so after shooting the suppressor can be gently inverted and tapped with most of the carbon fouling falling out of the suppressor.  Cleaning is then much easier, and often involves only simple wipe down.  The GM-22 suppressor that was tested went through 3500 rounds without cleaning, and continued to perform as designed.  The GM-22 has a very small profile, and was incredibly light to hold.  A great benefit to a shooter, as the GM-22 will not have a major impact on the ability to maintain aim and make follow-up shots.

The complete GM-9.

The GM-45 disassembled with patented baffle showing.

Here are the features of the GM-9 and GM-45 suppressors that complete the G-Core line of suppressors from Gemtech.

GM-9 Suppressor (rated for 9mm, .300 BLK – Subsonic Only)

• Length – 6.5 inches (without mount)
• Diameter – 1.25 inches
• Weight – 5 ounces (without mount)
• Mount – Various available depending on application
• Sound Reduction – 27-30 dB
• MSRP – $595

The threaded end of the GM-9.

The GM-9 on a Beretta 92.

GM-45 Suppressor (9mm, .45 ACP, 10mm – Dry Only, .40 S&W – Dry Only)

• Length – 6.2 inches (without mount)
• Diameter – 1.25 inches
• Weight – 5.5 ounces (without mount)
• Sound Reduction – 21-23 dB
• Wet Sound Reduction – 32-35 dB
• MSRP – $595

The GM-45 with machined Gemtech logo.

Note that the GM-45 should not be lubricated if firing .40 S&W or 10mm rounds.  Due to the pressure levels of those rounds, a lubricated suppressor could suffer from overpressure causing pre-mature deterioration.  Foster said that .40 S&W and 10mm rounds should only be fired through a dry GM-45.