I call them "z" baffles, it's a coaxial design
45 SMG cans. Why no new development?
- Thread starter strobro32
- Start date
Galil#1--on that can in the pic, i began the threads just in front of the 28 fins. As you'll know the action bar is only about 1/8" below the barrel. Having the threads forward of the fins ensured the can's circumference (where stock was chiseled out) was FORWARD of the action bar.
I have a Rhineland Arms SMLE .45acp conversion kit I intend to turn into a little shorty blaster, and want an effective can such as this,...so I'm paying attention.
Not looking to re-create a DeLisle carbine,...but sort of. I like the internal volume of the DeLisle, but dislike integral designs. If I could achieve the best of both worlds with a dismountable "fat bastard",...that's for me.
Not looking to re-create a DeLisle carbine,...but sort of. I like the internal volume of the DeLisle, but dislike integral designs. If I could achieve the best of both worlds with a dismountable "fat bastard",...that's for me.
In October of 2025 I got in contact with Joseph Jones of Curtis Tactical. I love his MK9k as reported here. He now works for Shaw Armament. We passed a few emails and I asked to demo of MK45. He agreed. Shaw Armament is 50 miles from me so that was nice.
Joe got very busy designing the new Shaw cans at the beginning of 2026 so we never got to do the demo. Other people at Shaw told me they had the internal parts for one more MK45. They just needed to make, serialize and paint the tube. I went ahead and ordered/paid for a MK45 February 18. They let me slightly customize it with .578x28 DT HUB Mount, Flat Front Cap Black Cerakote, No Logo. Very cool.
My 629 ROF FRT AR45 needs a hearing safe dry muffler!
Joe got very busy designing the new Shaw cans at the beginning of 2026 so we never got to do the demo. Other people at Shaw told me they had the internal parts for one more MK45. They just needed to make, serialize and paint the tube. I went ahead and ordered/paid for a MK45 February 18. They let me slightly customize it with .578x28 DT HUB Mount, Flat Front Cap Black Cerakote, No Logo. Very cool.
My 629 ROF FRT AR45 needs a hearing safe dry muffler!
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So.....I've been working on an ADJUSTABLE SD for the CMMG RDB setup in 9mm as mentioned on my site here: https://c3junkie.com/?page_id=3816
I have been very impressed how an SD chamber can make a small, LW can sound great.
That said, I am also working on a .45 CMMG RDB integral setup as well. Yes, I know 45ACP is already predominately subsonic but IMHO, porting has 3 advantages off the top of my head.
In my picture above, I have all those cans setup for Alpha threads and many .45 cans also come with Alpha threads since they are used on pistols. I will be able to share some parts I'm using for 9mm for .45 but I will at minimum have to get at least 1 part different for .45 than 9mm with my design.
The De Lisle carbine is .45 and also uses a ported barrel. Early ones didn't but later ones did which is mentioned in this video:
My barrel guy just received some blanks that I'm going to get made for testing. I also just received a Griffin Rev 45 modular can which is only 6.56" long in the short config. Worst case I run it 8.81" in long config but hoping when combined with the SD module I can get good performance short.
I have been very impressed how an SD chamber can make a small, LW can sound great.
That said, I am also working on a .45 CMMG RDB integral setup as well. Yes, I know 45ACP is already predominately subsonic but IMHO, porting has 3 advantages off the top of my head.
- Brings round down subsonic - (not applicable for 45)
- Brings the pressure down so the suppressor doesn't have to work as hard so you can get away with a smaller / lighter can
- Smoothes out the recoil impulse. Some of you may have seen that my early 9mm SD I did, I only used 6 ports to get to a state where the carrier doesn't bottom out in the buffer tube.
In my picture above, I have all those cans setup for Alpha threads and many .45 cans also come with Alpha threads since they are used on pistols. I will be able to share some parts I'm using for 9mm for .45 but I will at minimum have to get at least 1 part different for .45 than 9mm with my design.
The De Lisle carbine is .45 and also uses a ported barrel. Early ones didn't but later ones did which is mentioned in this video:
My barrel guy just received some blanks that I'm going to get made for testing. I also just received a Griffin Rev 45 modular can which is only 6.56" long in the short config. Worst case I run it 8.81" in long config but hoping when combined with the SD module I can get good performance short.
My buddy "Rufus" is a machinist who took a Rhineland Arms .45acp conversion kit and set about building his own pseudo-DeLisle. With the cost of the conversion kit and the donor rifle, he has about $500 in it so far.
Also modified the stock to carry a spare mag.
Also modified the stock to carry a spare mag.
Ok. I finally got my MK45 can from Shaw. I won't go into it, but CS from the crew was bad. Way too long a story to tell.
What can I say about this Mk45 can? It impressed me. That's hard to do. My 14 yr old son was like, "Dang, that is nice." He shot like 50 rounds, loves the 45 SMGs and didn't find the shots distressing to his ears. Joe did a good job with this can. Surprisingly hearing safe on a 5" RDB upper.
What can I say about this Mk45 can? It impressed me. That's hard to do. My 14 yr old son was like, "Dang, that is nice." He shot like 50 rounds, loves the 45 SMGs and didn't find the shots distressing to his ears. Joe did a good job with this can. Surprisingly hearing safe on a 5" RDB upper.
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Don't understand how ya got fucked if the can impresses you Strobro.
I picked up one of CF 45 acp conversions for the enfields and a pair of DP rifles last summer.
Plan on doing the DeLisle clone and the other in 44 mag.
Just need to get a digi fingerprinter and do the forms.
When I saw those repops for 7k I was like NOPE I'll make my own chips and do one.
Then saw one in 44 mag and figured why not one of each.
So far I have less then 400 into it and don't see needing to buy anything else.
I went from no time to free time.
I'd prefer the no time situation though right now.
Especially right now.
I picked up one of CF 45 acp conversions for the enfields and a pair of DP rifles last summer.
Plan on doing the DeLisle clone and the other in 44 mag.
Just need to get a digi fingerprinter and do the forms.
When I saw those repops for 7k I was like NOPE I'll make my own chips and do one.
Then saw one in 44 mag and figured why not one of each.
So far I have less then 400 into it and don't see needing to buy anything else.
I went from no time to free time.
I'd prefer the no time situation though right now.
Especially right now.
That is awesome. I would love to compare a bolt action 45 to this RDB 45 AR.
Maybe "F'd over" is too strong a descriptor for my experience. Although right now, I am still bitter. The problem is not the can. It was the CS selling and remaking the can, counter person stirring the pot and not leaving out the brown M&Ms.
The MK45 suppressor is good. Joseph's design for a hearing safe 2"x 6" 45 dry SMG can works. The product performance exceeded my expectations, which was a short fat hearing safe can.
I'm hopeful the frustration of the process will fade as shooting it is a joy without hearing protection. My son loves it. The ergonomics and function of the AR RDB 45 FRT is just fun and that is where we will leave off.
Maybe "F'd over" is too strong a descriptor for my experience. Although right now, I am still bitter. The problem is not the can. It was the CS selling and remaking the can, counter person stirring the pot and not leaving out the brown M&Ms.
The MK45 suppressor is good. Joseph's design for a hearing safe 2"x 6" 45 dry SMG can works. The product performance exceeded my expectations, which was a short fat hearing safe can.
I'm hopeful the frustration of the process will fade as shooting it is a joy without hearing protection. My son loves it. The ergonomics and function of the AR RDB 45 FRT is just fun and that is where we will leave off.
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Wow sux to hear that.
I think a lot of us are spoiled with the type of service we get from Practical solutions, Lage, BarrelXchange, or even Centerfire systems.
Then someone comes along and has either poor customer service or worse like your case NON at all.
Makes me glad to deal with the great ones and appriciate them even more.
I think a lot of us are spoiled with the type of service we get from Practical solutions, Lage, BarrelXchange, or even Centerfire systems.
Then someone comes along and has either poor customer service or worse like your case NON at all.
Makes me glad to deal with the great ones and appriciate them even more.
Looks awesome!
I had a small run of .45 CMMG compatible made and started doing some SD testing with it. I was really hoping that could get away with a small LW setup like I did in 9mm. However, since there are not many .45 SMG cans out there, I decided to go with the alpha thread pattern and when you are talking about a big .45 round and 5/8-24 threads, there isn't much metal there for the porting to bleed from the SD chamber into a typical .45 pistol / SMG can which again is more common.
As many know, I'm typically not a fan of most 3D printed cans as I like the ability to break the can down for cleaning (direct agitation in an ultrasonic with harsh chemicals). All that said, I got an Incolite 9S 3D printed Inconel can which is really LW and really quiet when coupled with an SD chamber. I see that they are coming out with a .45ACP version. I'll probably take a chance on one of those. They are hub threaded so I plan on making an adapter to allow larger ports for bleeding from the SD chamber to the can.
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