9MM SHOOTOUT and PISTOL TRIALS

On July 22, 2007 I did an extensive review of three 9mm silencers with 4 separate popular pistols.  I used 3 common ammunition types.  The test was to determine the sound pressure levels of each pistol and each silencer as well as to determine the optimum combination.  I also tested the ballistics of each ammunition type both with and without the silencers attached.  Click the picture

 

GEMTECH TRINITY IN DEPTH

The Gemtech Trinity is Gemtech's current production 9mm silencer.  It was designed as a multi-platform, lightweight modular silencer.  It can be fitted with up to five different weapon couplers, plus the 9mm Talon upper that can be fitted onto an M16.  Three screw-in mounts are available in 3 sizes, 1/2X28TPI, 1/2X36TPI, and the metric 13.5X1 left hand thread mount.  Read more...click the picture

 

AAC EVOLUTION 9 IN DEPTH

The AAC Evolution 9 was designed to be fired on a pistol.  It was not designed as a multi-platform silencer (even though it does well in other applications).  The main design feature of the Evo 9 is the A.S.A.P system, which stands for Assured Semi Automatic Performance.  The A.S.A.P system is a booster system referred to as a "Neilsen Device" to enable the pistol to function properly.  When you add a silencer to a barrel, the extra weight can cause the action to fail to work.  Click the picture for more...

 

SWR TRIDENT 9 IN DEPTH

The SWR Trident 9 is a modular design silencer.  It can be used on multiple platforms with the use of various coupling devices.  SWR's "Neilsen Device" is called the L.C.D.  The L.C.D comes apart using the supplied tool so the end user can install either a 1/2X28 piston shaft, or a M13.5X1 piston shaft.  The L.C.D actually has its own porting system built into it and the piston shafts are themselves ported.  This allows the L.C.D to begin the gas trapping process.  Click the picture for more...

 

9MM Barrel Lengths

I performed a very brief test to see what barrel length has to do with sound pressure levels and velocity.  The test was performed with a two 9mm Colt 635 style submachine gun uppers for the M16 platform.  A upper with a 5 inch barrel (know as the Gemtech Talon upper) and a 9" barreled upper.  The silencer used for the test was the SWR Trident 9.  Click the pictures for more info...

 

9mm 3 Lug Adapter Tests

On August 26, 2007 I did a test on a Colt 635 style 9mm upper.  The barrel length on this particular upper is 9" and is threaded 1/2X28 TPI and has a H&K 3 Lug adapter that is also threaded to screw onto the barrel.  This gives this upper versatility.  I chose the nine inch barreled three lug upper for the tests after doing another test with Gemtech's Talon upper to determine the effects of barrel lengths on suppression and velocity.  The results of those tests are here.  The nine inch upper was quieter and developed the same or more velocity.  I tested the Gemtech Trinity (using the 3 lug adapter....Click the picture for more..