I put the Witt Machine and Tool Co. SME "Sound Mitigation Equipment" devices through some testing. In this review, we are going to go over quality and performance.
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From the Manufacturer's Website
SME- Sound Mitigation Equipment - non class III
The SME is a highly effective Linear Comp/Blast Can that allows for excellent shot to shot recovery & incorporates an external shroud that reduces lateral auditory reports. The brake itself is machined from a single piece of 416 stainless and is tuned for efficiency without unnecessary weight. The three port design keeps the brake short, while allowing for an extremely high level of efficiency. The outer shroud of the SME Slim is made of either the same rugged 416 stainless that the brake is milled from or from aluminum to help decrease weight. When the unit is assembled it allows for complete control of dynamic recoil forces while keeping the pressure wave from the shot downrange. This allows for maximum recoil control and a hearing safe environment for your Teammates or fellow shooters on the firing line. The Slimline shroud has a diameter of 1 1/4inch and weighs 7.9oz with the brake. The Lightweight shroud has a diameter of 1 1/2 inch and weighs 6.7oz with the brake.
Now for my review!
Both of the SME's that I received came in protective packaging. They arrived without any dings, blemishes or scratches. Bothe of the SME's seem to be well machined. Both devices came threaded in 1/2x28 which limited what I was able to apply them to without the use of a thread adapter. When ordering the SME online, make sure to select the proper thread pitch for your intended application!
The firearms that I tested the SME devices on were the Tippmann Arms M4-22. This is the .22lr AR made by Tippman Arms... and is a BLAST to shoot! Check out the link to the M4-22 here.
The other firearm used for testing is the CZ Scorpion Evo3 S1. I have owned this scorpion for about 2.5 - 3 years now, and is still on of the absolute favorites in my collection! Check out the link here if you are interested as well.
So I took these devices out Three times so far. Once was to a local indoor range, Ted's Shooting Range in Queen Creek Arizona, and then out to a private desert range twice. The muzzle report if drastically different between inside and outside, so trying these in both environments was a good idea.
Here is what I experienced...
The SME is a pretty cool device! First of all, the Muzzle Break on the scorpion DRASTICALLY improved the already low recoil impulse. When firing without the shroud, it turned the scorpion into an extremely FLAT shooter... AWESOME! After attaching the shroud, the recoil did seem to increase again, however the sound absolutely started getting pushed away from me. You know that feeling when you forget to put on your ear pro... and take the first shot? The SME seems to eliminate that muddy, deafening ring in your ear. Though still a loud muzzle report... it takes the sting away from it. I was able to fire off quite a few rounds before I felt the need to stop.
My experience with the Tippmann M4-22 was a very similar experience. Of course the .22lr is much quieter than a 9mm, so everything just seemed to scale down. The barrel is very short on the M4-22 pistol, so firing it without ear protection also damages hearing. However after placing the shroud over the SME Muzzle Break... It pulled that loud smack and redirected it down range. The SME Slim-Line has absolutely found a new home on the M4-22.
I am very please with the SME devices. Now one thing to keep in mind... The are NOT suppressors! The don't muffle the gun shot, rather they redirect the sound away from the shooter. If they were actual gun mufflers... they would be considered silencers and would require an NFA registration. They wont make your gun-shot quieter, but they will absolutely make it more pleasant for the shooter!
I would absolutely give this company a look if you are looking for a true Do-It-All Muzzle device! Between Sound Mitigation and recoil Reduction... the SME really seems to be the answer.