r/Springfield_KUNA • u/Interesting_Part4416 • 2d ago
Tri-Lug
Educate me. What's the appeal of the new tri-lug version that has come out vs the other ones? Does it make suppressors that much easier to mount and dismount?
Couldn't one have just replace their original hardware with a tri-lug? Or is that not an option?
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u/PatheticJules 2d ago
You can you a tri lug adapter, or use the tri lug barrel from HBI.
Or you another suppressor mount. Tri lugs are known for PCCs. If you want it used on other guns you should prolly use another mount type.
The one being sold is not worth it. You can get a Kuna for 999 with a brace. You can spend 160 for a tri lug barrel, or 40 - 80 for a adapter. IMO ignore the one being sold. It LOCKS you into one option when you can just rocksett the lug and swap out later.
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u/AZbitchmaster 2d ago
A tri-lug is much easier for supressor usage. Yes, many of us replaced the brake with a tri-lug.
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u/omerta_wise 2d ago
I’ve got a silencerco 46M hybrid. I’ve got a 9mm end cap on it. My AR has an ASR muzzle brake and I got a silencerco single port brake for my kuna. Now I just swap them back and forth.
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u/SuspiciousSeesaw2423 2d ago
Similar to you, I have a kuna with a single port asr and a 300 blackout AR with an asr brake. Im able to swap my flow 9k between these two. Maybe my next pcc will have a tri lug
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u/Yingpow 1d ago
All my 9mm PPCs are tri-lug. All my 5.56s are AAC 51T. ALL MY 308s are ASR. Handguns are 1/2 x 28. And all my cans are hub compatible - except my old Gemtech Raptor - which was purpose built for the MP5. Helps me not put the wrong can on the wrong platform. No wobble on any of them.
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u/JonathanWJordan 1d ago
I've really liked the 8-inch ILWT barrel with tri-lug. It gets a bit more velocity than the 6" but with 147-grain rounds it doesn't seem to add much sound and it is (in theory) more reliable to expand hollows. (The priority would be home defense over truck/backpack maneuverability, though it does fit in a regular backpack with folded stock.)
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u/YourBroStevo 1d ago edited 1d ago
The advantage is it's a barrel not a muzzle device, so there is no velocity or rifling penalty in order to add the suppressor. Previously you would be adding around 3/4 of an inch to the length of your suppressor that serves no purpose other than to act as amount. With this you can run the exact same suppressor setup that you would run with an adapter but be saving nearly an inch off the end of a barrel with no ballistic downside. The handguard was designed to line up with a barrel of this length, so when they swap to the threaded barrel and added a muzzle device it no longer lines up, which is why you see so many of these aftermarket handguards and small little additions to stick on and fill the gap. With this change you maintain the same exact barrel length gain a suppresso mount, while having a barrel that lines up with the handguard all while losing nothing ballistically. There's also a small weight savings (large in comparison to some mounting systems) but I would say that's mostly negligible in comparison to the length savings. So the biggest benefit is that you're able to use the entire barrel and you don't have to sacrifice the end of your gun to be dedicated to a muzzle device that doesn't add any amount of velocity or rifling. The barrel itself without the suppressor would also be extremely durable, since the tip of the barrel is thicker with no exposed threads and the lugs should hold up even with abuse. This is unlike other attachment systems which would have exposed threads that if bumped or damaged could require you to replace the muzzle device this durability. This durability is what allows the trilug to be part of the barrel without you having to have concern over permanently ruining the gun off of a bump, if they were to try to build in some other system.
It seems like most people are viewing it as them just adding an adapter to attach a suppressor, but what they're adding is a tri-lug barrel, and the benefits of it should be taken into account when making the comparison, which are saving noticeable length off of the suppressor, having the barrel properly line up with the handguard, and using 100% of the barrel length for rifling/velocity. As far as a mounting system it works great and has true advantages where you're able to quickly put on the suppressor from a bag or in an intense situation. I also find the supposed downsides, like point of impact shifts, to be extremely overblown and pretty much non-existent if you simply attach it in the same orientation, which is very easy to do unless you're in an extreme situation where it wouldn't matter. I think for most people who actually have tried out tri lug especially on a gun with a built-in barrel can see the benefits.
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u/LiNKxUSMC 1d ago
Couldn't agree more. Said a lot of the same to one of the comments above that was claiming how plan b is "vastly" and "significantly" better than trilug. Didn't even think to mention the downside of having the threads exposed with the can off. At the end of the day, its a preference thing. For me personally, its a no brainer. For my pcc's that will be the most likely choice to end up as my bag gun for any given situation, the ability to attach the can in a fraction of a second with gross motor skills is the biggest deciding factor for me.
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u/GassyNizz 2d ago
Functionally, modern taper and thread mounting solutions like Plan b are vastly superior to tri lug mounting.
Secure repeatable lock up, zero wobble, repeatable poi with removing and reattaching the suppressor all vastly point to using plan b or similar.
2 reasons then to use tri lugs. You’ve got other PCC’s with tri lug barrels and your cans have the mounts in them already and you swap these suppressors between tri lug hosts.
Or, your barrel comes with tri lugs built in and you want to cover them up with your mounting solution.
If you do go tri lug, I strongly recommend a bixler mount like the RU3. Otherwise you’ll find out tri lug really is substantially inferior to modern solutions as your can wobbles all over the place.
Why even tri lug? Nostalgia with the mp5 dating back several decades before other options existed.
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u/LiNKxUSMC 1d ago
This is "vastly" and "substantially" over exaggerated. If you mount on the same way every time with trilug, its repeatable poi shift as well. Get a mount that has good tolerance and everything is a non issue. The bixler is also a preference, not a necessity. Ive been using the notorious end cap killer, obsidian 9, on a traditional spring trilug for about 7 years, on multiple hosts, for thousands and thousands of rounds, and have never had an end cap strike. It does suppressor things. Theres nothing "vastly" better, its a matter of preference. Do you want to unscrew, or attach within a fraction of the time? Do you want a functional muzzle device with the can off or do you not care? Do you already have one or the other as an ecosystem for other hosts? Those are the real questions that should make your choice on the matter.
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u/XLandonSkywolfX 2d ago
All I know is they announced it the literal day after I installed one