I recently evaluated the following suppressors on the MP5 and MP5K platforms;
Acadian Armament Defender 9 (D9)
SilencerCo Omega 9K
DeadAir Armament Wolf 9SD
It is easy to determine which one of these three suppressors are more aesthetically pleasing; it’s the D9. Its length is between that of the other two, with a much smaller diameter. Its compact size feels exceptionally well balanced on the front of a pistol caliber carbine, particularly the MP5 platform. I am more accustomed to the bulk of a Gemtech MM-9 on a CZ Scorpion, and handling the Zenith Z5/D9 combo was a delight. I started off my shooting session by warming up on steel; ah, the old familiar sound of a suppressed 9mm hitting steel. But, what wasn’t familiar was the lack of smoke exiting the muzzle, very little to no muzzle rise/recoil, and zero gas to the face. I quickly increased target transition speed which was incredibly easy with this balanced weapon system.
I then began to shoot from a bag rest to a paper target at about 35 feet. Changing the indexing on the 3-lug mount and shooting three rounds on each, I shot the Wolf, Omega, then the D9. The Wolf is big and bulky, and I saw major POI shift (9-10”) when changing indexing points on the 3-lug. The Omega 9k and D9 both did well in holding groups. The D9 held groups slightly better. No gas to the face with any of these, however both the Omega 9K and Wolf 9SD produced more smoke than the D9. As far as sounds goes, it was tough to hear a difference from the shooter perspective. They all suppressed the sound of the gas boom well, but the sonic crack in this small outdoor range ruined any chance I had at telling the difference.
The D9 and the Omega 9k ran a tight race in this demo, but the D9 has it beat in my book for a few simple reasons. First, it can be taken apart and cleaned piece by piece. Secondly, it seemed to cool faster than the other two suppressors. Thirdly, the D9 is rated for pressured way higher than 124gr 9mm produces. I really want to shoot it on Zenith’s Z43 in 300blk…it’ll handle 300blk supersonic as well! And finally, the D9 is optimized for the MP5 platforms, so it comes standard with a tri-lug mount, and I hear that Acadian Armament will soon be offering mounts to fit pistols and threaded 3-lug adapters for fixed barrel pistols/rifles.