Are suppressor mounts brand dependent/interchangeable?

General Firearms NFA
1

I am in the process of setting up a trust for a new can. I figured it might be prudent to figure out which one I want first.

I have a 14.5" BCM with perm’d FH right now. I have a second lower that will eventually be an SBR, but it will be another year before I get that one done. The plan is to perm a suppressor mount onto the 14.5 and then get the same mount for the new SBR down the road. That way I can run one can for both rifles.

I had originally considered a YHM due to the work discount I can get. With some looking, I have seen that permanently attaching a YHM mount is not advised. I am now looking at the Ranger 2, M4-1000, Trek, etc.($700’ish cans).

My question is, are there any interchangeable mounts, or are they proprietary to each manufacturer, i.e. could I perm. attach an AAC Blackout and use a YHM Phantom or Gemtech Trek? Each manufacturer seems to have an 1/2x28 tpi option. Would any of those work as long as the tpi matched?

Thanks

2

Any can that is 1/2-28 thread mount will work interchangeably.

But all the fast-attach options from each manufacturer are proprietary and not interchangeable.

3

Awesome, thanks.

Now to just find one that will be easy to perm. mount(and long enough to satisfy the NFA!).

4

They are all reasonable easy to perm mount.

One thing with the YHM ones is that the mounts have a spring assembly that you won’t be able to get to if you ever have an issue with it if you perm mount it.

If i can give you some advice- why not go with a 16" now and not have to mess with perm mounting? That extra 1.5" and cost to perm is not really worth it. YMMV.

5

Depending on your local state laws, it would probably be cheaper overall to just SBR the gun and give yourself the ability to put whatever muzzle device on it that you want. If you can own the can, why not just SBR the AR too.

A decent fast-attach mount is gonna be $100-$150 and will be destroyed if you ever try to remove it (maybe your barrel too). Add to that gunsmithing costs, etc and a $200 one time tax to the ATF doesn’t sound too bad an alternative.

6

I know exactly what you guys mean. This is my first AR, I have it set up exactly how I want it and I don’t plan on getting rid of it which is why I don’t mine the permanent mount.

As for the 14.5" with attached hider vs SBR; Like I said, I already have a lower that will get the SBR treatment as I come across some deals to build it(two kids entering private school in the next two years, so I don’t want to blow up any funds, so I’m picking up stuff that I can find as it comes up). I really like my 14.5 right now, so I’m in no rush to get the SBR up and running. Plus I am still undecided on barrel length, as I have some more research to do on ballistics, effects of suppressors, etc of the various lengths.

For me to just put a can on this one, I’m out $200 for the stamp, plus ~$500 for the mount and can itself, so $700.

If I SBR’d my current rifle, I’d have to add another $200 for the SBR stamp and $300 for a new barrel + the above costs, so roughly $1200

If I finish the SBR now with a can, which is an option, but I have picked up some instructing jobs on the side which is where the funds for this would come from. They don’t start until the fall. Anyway, I would have $200 for the suppressor stamp, $200 for the SBR stamp, $500 for the can/mount, plus probably another $1k to finish the build(I literally only have the stripped lower right now), so more like $1900.

Not to mention that I would get a mount anyway to put on the 14.5 in case I decided to shoot it suppressed.

I appreciate the input, and logically, if I were starting from no rifle status, just building the SBR would probably be more economically sound. But for me, just attaching a thread on mount to my current rifle is much easier/feasible right now.

Does that make sense, or are my numbers skewed?

Thanks!

7

I see what your saying, but just like today you might be saying “I should have just SBR’ed that lower back then”. A year or two from now you will be saying the same thing. If you plan to SBR ‘A’ lower at some point, might as well just do it now and use your existing parts. You can always build a second title I (non-NFA) AR later.

Also, have you talked to a smith about removing your existing perm. flash hider and installing a new one? He might have to cut your barrel and re-thread it, and you will still be less then 16" overall with the new flash hider if that’s the case.

If I were you I would;
SBR your existing lower receiver (or the new one and move parts over)
Pay a smith to cut and re-thread your barrel to 14"
Install standard flash hider

8

Since your 14.5 is already permed, just register whichever lower when you do the form 4 for the suppressor.

Then you can do whatever you want to your current upper without needing to re-pin the mount. You will only need $200 + the cost of engraving. You dont have to have a bbl < 16" on your SBR.

Then if you build another shorty upper you can use the lower you already have.

The main issue is your already pinned hider and whether it’s feasible or worth it to remove it.

9

That’s a reasonable idea. But like most of us on here, once I get that SBR stamp, it’s all or nothing for me! It would be all downhill and I’d probably just hurry up and finish the other one. :smiley:

10

Okay, so a complete U-turn. I sold my current AR and bought a SCAR. I’m weighing the trust/individual routes, then I’m sending in the paperwork for an SBR and can.

You guys sure know how to talk a guy off the ledge, you know. :stuck_out_tongue:

Thanks for the feedback.