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Discussion Starter · #1 · (Edited)
I'm having one of my SP5Ks sent off in a couple weeks to Mike (Mike's Machine) and am wondering best direction to go for a suppressor, given what I'd like to do. I'd like to get decent suppression with the SP5K once it is fully converted over by Mike, but I'd like to use the same suppressor on my HK USP Tacticals in 9mm, so, trying to get ... if you will pardon the pun ... literally in this case the best bang for the bucks. I'd appreciate feedback from anyone who has taken this path.

ADDED: I was looking hard at the Gemtech MK9K, but it appears while it is great for a subgun, it is a bit on the "much" side for a handgun, and I'm not sure if it comes with optional attachments, etc.
 

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i haven't had a threaded barrel installed on my SP5K yet but for this same reason i went with the AAC Ti-Rant 9 since you can replace the piston on it to make it compatible with several different thread patterns. i'm sure there are several out there with a changeable piston but i would make sure to go that route no matter which model you purchase.
 

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Discussion Starter · #3 ·
i haven't had a threaded barrel installed on my SP5K yet but for this same reason i went with the AAC Ti-Rant 9 since you can replace the piston on it to make it compatible with several different thread patterns. i'm sure there are several out there with a changeable piston but i would make sure to go that route no matter which model you purchase.

OK, yes, that's what I want to do, thanks for the vocabulary I needed to express this. I got a Gemtech for my 45s, and heck, it may work just fine on my threaded barrel SP5K with a threaded barrel.
 

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I did my HK94 SBR threaded 1/2x28. I used the same suppressor with a different piston on my USP with the 13.5x1 thread. You will have to use the fixed barrel spacer for the Sp5k. I really liked this setup. Only issue of course is heat. After a couple of mag dumps its not going to be fun switching pistons
 

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OK, yes, that's what I want to do, thanks for the vocabulary I needed to express this. I got a Gemtech for my 45s, and heck, it may work just fine on my threaded barrel SP5K with a threaded barrel.
while i'm not sure on the Gemtech, some suppressor makers will make a smaller cap for the end to use on lower calibers that it was designed for. if Gemtech does, you might just need the correct piston and cap (not necessarily needed) and you can use your .45 suppressor on your SP5K. i know a lot of people that do this instead of buying another suppressor.
 

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Keep in mind that a subgun can is not an optimal pistol can and vice-versa.

If your SP5K is your primary use for the suppressor, I'd recommend the Silencerco Omega 9K. It is not a serviceable can however when running high volume from a subgun, you want the durability of a fully welded can. I run one on both my D54N and VP9.

If the USPT9 will be your primary, look at the SiCo Octane 9 or Liberty Centurion. Both are user serviceable. The Octane is a conical core, the Centurion in a monolithic core (if you have a preference). The Centurion is a bit shorter but both have a very pleasant tone when shooting without hearing protection. While not as durable as a fully welded suppressor, both handle subgun use very well.

While the Omega 9K is my go-to, I do own both the Octane 9 and Centurion as well.

Cheers!
Joe
 

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I'll echo what Chopstix said. I also have an Omega 9k and a 9mm Octane. I prefer the Octane for pistols but by far prefer the 9k on subguns. The Octane will work on a subgun but it is a bit long and unwieldy.

Also, I am not sold on the whole "user serviceable" aspect of the Octane and its peers. It is advertised as this being a benefit but in my experience it is a PITA. With the Octane I feel like I have to constantly check to make sure that the blast shield and end caps are still screwed down tight every mag or two since they constantly loosen. Sure it comes apart for cleaning but is that really a benefit or a curse? The Omega 9K is just click and go and much less fiddly. Also, the Omega is so short and light, I find that I take it with me all the time when shooting subguns. With the Octane on a pistol, once the novelty wears off you likely wouldn't use it as much.
 

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I use a Ti-Rant 9mm on mine. A bit small for sustained F/A but for a few magazines of bursts it is great. Light weight keeps the handling nice and quick and it goes on the 3 lug with an adapter.
 

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Keep in mind that a subgun can is not an optimal pistol can and vice-versa.

If your SP5K is your primary use for the suppressor, I'd recommend the Silencerco Omega 9K. It is not a serviceable can however when running high volume from a subgun, you want the durability of a fully welded can. I run one on both my D54N and VP9.

If the USPT9 will be your primary, look at the SiCo Octane 9 or Liberty Centurion. Both are user serviceable. The Octane is a conical core, the Centurion in a monolithic core (if you have a preference). The Centurion is a bit shorter but both have a very pleasant tone when shooting without hearing protection. While not as durable as a fully welded suppressor, both handle subgun use very well.

While the Omega 9K is my go-to, I do own both the Octane 9 and Centurion as well.

Cheers!
Joe
Joe will you betting more B&T MP5/APC cans? I think that would be a pretty good option for just the SP5K assuming Mike is also adding the B&T barrel.

OP - I have an Octane 9 that I use with both SMG styled weapons(SW89k, CZ Scorpion, Colt SMG) and my various pistols. Joe makes a great argument for the Omega9k(mine is in jail) but I will say the interchangeability of the SiCo Octane/Omega9k is why SiCo gets my money. Accessories like mounts, end caps, and tools are plentiful so I don't think you'll regret switching to SiCo.
 

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I will throw the rugged obsidian45 in here, too. I have an octane, but in the k configuration the obsidian is an inch shorter and looks/feels/handles nicer on my reverse stretch.

I have 3-lug mounts for the RS, and pistons for the hk45t and p30. The interchangability between sico/rugged is a plus, but I prefer the rugged pistons and mounts.
 

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Discussion Starter · #13 ·
Thank you, gents, for all the great advice and observations. Much to consider. I'm persuaded not to try to get a "one size fits all" can to use on both the SP5K and on my handguns. I'm aware that suppressing 9mm, particularly if you are not shooting subsonic 9 is not as dramatic an experience as we are led to believe. On the other hand, suppressed 45ACP is sure pretty sweet. I was with a guy who had a pre-ban/original/authentic MP5 and was shooting it suppressed,with the Knights Can and subsonic ammo. It was absolutely remarkable. We were shooting against static paper torso targets on large Kyvex backing and we could hear the suppressed shot and the loudest noise was of the rounds slapping the Kydex. Very cool. Ditto for steel.
 

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Being fortunate to own eight cans, I'd like to reinforce the notion of "for best suppression get the suppressor best suited to the specific application". I've been down the ".45 will fit all pistol calibers applications" road. Can most .45 pistol suppressors be adapted to 9mm, .40 S&W, 10mm, 300 BLK OUT subsonic and .45? Yes, but all things being equal, a .45 can on a .45 handgun and a 9mm can on a 9mm handgun using subsonic ammo, the .45 can combination will never be as quiet. Why, because the hole in the end of the .45 is bigger than the hole in the end than the 9mm can. So with a bigger hole, the sound has an easier time getting out of a .45 can than a 9mm can.

Scott
 

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Being fortunate to own eight cans, I'd like to reinforce the notion of "for best suppression get the suppressor best suited to the specific application". I've been down the ".45 will fit all pistol calibers applications" road. Can most .45 pistol suppressors be adapted to 9mm, .40 S&W, 10mm, 300 BLK OUT subsonic and .45? Yes, but all things being equal, a .45 can on a .45 handgun and a 9mm can on a 9mm handgun using subsonic ammo, the .45 can combination will never be as quiet. Why, because the hole in the end of the .45 is bigger than the hole in the end than the 9mm can. So with a bigger hole, the sound has an easier time getting out of a .45 can than a 9mm can.

Scott
That's not always the case. Consider this video. It's an oldie, but a goodie.
 

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That's not always the case. Consider this video. It's an oldie, but a goodie.
You are certainly entitled to your opinion. It has been my experience that sound recordings of suppressors are useless. Sound is such a subjective subject. Two different shooters actually shooting the same gun with the same suppressor won't have the same impression. I own a SWR HEMS II .45 can and Mark 23. This was several years ago but on a .45 can thread another member stated he had a SWR HEMS II can and Mark 23 and that it was "pellet gun" quiet. At least my SWR HEMS II can and Mark 23 shot dry, hurts my ears, so I only shoot it wet.

My opinion of the ".45 will fit all pistol calibers applications" is based on the fact that a .45 can must have a bigger hole in the end of the can of the 9mm. Can a given 9mm can sound louder a particular .45 can? Of course that is possible. I stated above that "all things being equal". That would be two cans built using the same technology, the smaller muzzle opening would tend to be quieter. It is simple physics. There is such a very big difference in the possible technology in any given 9mm and .45 cans, it is possible to have a .45 can quieter than a 9mm. But if you love all the calibers listed above through your .45 can, good for you.

Scott
 

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I tend to agree with Scott on the point that sound recordings do not accurately match the sound experienced in person. Somewhere on here I posted video comparisons on my Raptor 9 mm and MK9K 9 mm cans on my MP5K, both with sub-sonic ammunition. The videos don't 'sound' that much different but, in person, there was a definite difference, mainly in tone. Best I could describe it the Raptor had a bit of a 'crack' sound while the MK9K was a bit more of a 'thud'. I believe that the high frequency crack is more 'loud' than a thud. Maybe due to the difference in volume? If so, it would be neat to compare the MK9K to the much smaller Omega 9. Alas I currently have 8 cans with 4 more in jail but none is a Omega 9...
 

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Have both... On my D54-N the MK-9K is quieter than the Omega 9K... Hands down
If you had to keep 1, which one would it be?

To the OP - there is a reason the modular cans are popular now, but also realize they are very new. It used to be "common knowledge" that extra silencer parts were verboten, whether baffles or end caps. Now all of the sudden you can buy 9mm end caps for your 45 can and have an extra tube/baffles laying around.

The 9mm end cap and the modular 45 can are really the best of both worlds. And I can't be crazy as Griffin, AAC, Dead Air, Rugged, SilencerCo, and even a new one called KGMade are making modular suppressors of some flavor. If you are going to suppress the pistols then Obsidian or Ghost seem like the 2 best choices. AAC Tirant 45M is out there as well.

I have an Obsidian incoming but I wouldn't be bummed to have an Omega 9K. I use ear plugs so the few db's here or there don't matter. I do want something that does not feel like an anchor on the end of my carbine/sub/pistol.
 
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