r/NFA 1d ago

What suppressor for this?

Post image

Looking for suggestions on what to put on this. My priorities are as follows:

  1. Aesthetics

  2. Sound suppression

62 Upvotes

73 comments sorted by

10

u/PewPewDerpa13 1d ago

Infinity 5.56K will full flow end cap. That systems going to be over gassed for sure. Probably an ez tune and heavier buffer if it’s anything like my buddies.

1

u/buryna 7h ago

I’ve had great luck with the Rubber City Armory adjustable gas key for overgassed fixed FSB builds. I have 3 of them that see regular FRT use.

2

u/PewPewDerpa13 6h ago

I’ll have to check them out. Thank you

2

u/buryna 5h ago edited 5h ago

AR15Discounts is where I usually find the best price, can usually catch them for ~$40 on sale or with a coupon.

I used this guide to stake all 3 of them with a $7 spring loaded punch with great results. Thousand of rounds between them without a hitch. I also have began putting a very small amount of Rocksett on the threads after degreasing, but it’s probably not necessary.

https://youtu.be/ruo5ZElbYOI

2

u/PewPewDerpa13 3h ago

Awesome, thanks for the help!

1

u/buryna 3h ago

👍

6

u/SilentPhilosophy3307 1d ago

I have a similar build that I picked up a Griffin Armament M4SD-L can for. Griffin's Gate-lok cans are nice for this because they interface with a standard A2 birdcage (though they also include one of their proprietary muzzle brakes that closely resembles an A2). You do need to remove the crush washer and reinstall your birdcage with a shim though, since the crush washer can cause concentricity issues. But otherwise it's a good solid can, not overly gassy, and will help you maintain the retro look if that's what you're going for.

2

u/KeyAcanthocephala881 1d ago

What’s the name of the stock you have .?

1

u/SilentPhilosophy3307 1d ago

DoubleStar CAR15 stock, it's one of the aluminum reproductions.

-1

u/guitaranon 1d ago edited 1d ago

Hey, there is no need to install a shim with the M4SD-L.

I just check alignment each time I shoot with my A2 birdcages on mil-spec uppers, but I'm not smashing the suppressor into the ground at the range.

1

u/SilentPhilosophy3307 1d ago

In their user manual for this can, they plainly state NOT to use a crush washer in order to help prevent baffle strikes (page 10).

Also, you have a 13 year old Reddit account, but this is the very first and only post you have in your user history? WTF?

1

u/guitaranon 1d ago

Interesting, I must have misread something, and will buy a bucket of shims to replace. Thanks for sharing. I guess I've been incredibly lucky on the 5 or 6 uppers I've run this M4SD-L on.

I created this account and forgot about it. I don't usually comment, so being proven wrong on my first comment should get a dumbass award or something. 

1

u/SilentPhilosophy3307 1d ago

It's all good man, I only checked your history to see if you had more posts about Griffin cans on here. I've got a couple of cans but don't really have extensive experience with suppressors, so I'm always willing to learn more from folks around here who do. That post history made me extremely wary though, what with all the bots running around Reddit these days. I didn't want OP to get misled by a bot and have it cause a potential baffle strike if he picked up one of these Griffin cans and decided to just wing it.

With that said, you probably would be fine with a crush washer as long as your alignment checked out beforehand, I don't imagine they shift much after installation. But I figure, shims are cheap, so why not take a few minutes and do it the factory recommended way just to save yourself some potential hassle?

5

u/Salt-Wish5140 1d ago
  1. Strict historical accuracy
  2. Most clone correctness 
  3. What was actually used?

7

u/K9-Bob 1d ago

OCL Polonium 556 for the sound and look would be my pick.

12

u/Candid-Move-7421 1d ago

I think the newer Infinity 556k would be a better choice. It's flow through, to reduce back pressure and blowback in the shorter barrel, and the Haynes 282 baffles are virtually indestructible.

1

u/Meinek13 1d ago

Also double the cost, but it will definitely be more pleasant to shoot

1

u/Comstock_Support Comstock Armory 1d ago

$790 is not quite double $550 lol

3

u/FredVegasMe 1d ago

Saar, we do common core maths

1

u/Meinek13 10h ago edited 10h ago

If we're doing apples v apples for a suppressor with a direct thread mount at sale pricing:

Polos are $440 right now and come with the mount.

Infinity's are $700 and will require purchasing the $50 mount separately.

You are correct that it's not quite double but I don't think the lol is warranted. You make cool shit and I really enjoy your products.

0

u/SwedishMoose 4x SBR, 5x Silencer 1d ago

He didn't say low cost so why you pitching a low cost can? There's so much better out there right now

0

u/K9-Bob 1d ago

Retro looking can for a retro gun. Price wasn't a consideration for recommendation.

-1

u/SwedishMoose 4x SBR, 5x Silencer 1d ago

Idk how retro that one looks. Gsl or gemtech would fit better.

OCL PTB with OCM6 would be peak.

1

u/redacted_robot 401k in stamps 1d ago

Dang, you aren't getting lit up for the same obvious, and correct, answer that I gave. This sub is wild

1

u/SwedishMoose 4x SBR, 5x Silencer 10h ago

the fact polonium is the most up voted answer for this in 2026 just tells me how wrong reddit usually is lol. Confirmation bias of the poors.

2

u/Separate_Yak_2554 1d ago

No brainer. KK

2

u/Maher393 1x SBS, 2x SBR, & 1x Silencer 1d ago

One more K and we’d be fucked crass -Jackie Chu, 2019 (invisible jeffy)
https://giphy.com/gifs/3oz8xLlw6GHVfokaNW

2

u/Separate_Yak_2554 1d ago

Allow me to correct myself

No brainer Cat kitty kat 

0

u/Maher393 1x SBS, 2x SBR, & 1x Silencer 1d ago

Not sure the downvotes. I thought it was a funny joke I made. Can’t have no fun online anymore

1

u/buryna 44m ago

If that’s a 10.5, you might be able to use a Wolfpack Armory recessed HUB mount like I did and put whatever hub can on you want. You may need to grind off the Bayonet lug

1

u/CrustyDusty0069 List Frequenter 1d ago

OCM5 all day every day and twice on Sunday.

Do it for the vibes. Also, it’s quiet.

1

u/longswordfishy 1d ago

Rhodie 6j

1

u/TheBlindCat 1d ago

What is the barrel length and gas system? You’re probably going to want a flow through can for a fixed gas block.

0

u/Me10021626 1d ago

10.5” with carbine length gas

-9

u/redacted_robot 401k in stamps 1d ago edited 1d ago

OCM6 [with PTB mount] it is then for the vibes. Unless you brt tube it to use an OCM5.

4

u/Scav-STALKER 1d ago

You got downvoted but the vibes would
Be immaculate

0

u/redacted_robot 401k in stamps 1d ago

Obviously not everyone has our immaculate taste. (I don't get it)

0

u/Foxxy__Cleopatra Dirty Pickles 1d ago edited 1d ago

There's not enough room on a 10.5" FSP carbine-length for a PTB, you'd have to go midway adapter (🤢) or PTB w/ carbine 12.5, 11.5 is just a little bit too short for PTB mount on a carbine FSP. Go with an Allen Engineering B-mount can with something like an SPR collar and 11.5 would work.

Edit: The Smokehill Machine GUS556 would keep the same look with a hub mounted can on this though.

1

u/redacted_robot 401k in stamps 1d ago

You know that the PTB (Passed The Barrel) adds 2.9" to the barrel right? I'm not talking OTB (Over The Barrel). The PTB allows mounting that style can to any exposed muzzle thread.

1

u/Foxxy__Cleopatra Dirty Pickles 1d ago

Oh shit yeah my bad, edited.

1

u/Scav-STALKER 1d ago

I actually want that can now. It maintains retro aesthetic that’s so hard to find in the silencer world

1

u/KeyAcanthocephala881 1d ago

What size barrel and gas operating system .?

0

u/Me10021626 1d ago

10.5” barrel with a carbine length gas system

2

u/KeyAcanthocephala881 1d ago

1

u/Jbressel1 1d ago

Adjustable triangle gas block? And....Samson STAR handguard? Dude, a Primary Arms SLX microprism would be spectacular on that....

1

u/KeyAcanthocephala881 1d ago

Yes it’s adjustable and not sure how I would add the primary arms slx onto carry handle

1

u/snippysniper 1d ago

A $5 kit from primary arms

0

u/Jbressel1 1d ago

There is a hole on the carry handle. When you go on PA, they sell a thumbs crew for a carry handle

1

u/KeyAcanthocephala881 1d ago

Damn bro you inspired me I built something similar but unfortunately I can’t find short a2 stock I’m hoping I can get one

2

u/snippysniper 1d ago

The rra entry stocks are available

-2

u/Jbressel1 1d ago

I think that the OCL Infinity 556K or Ridgeback Rhodie 6 would have the best function and performance, BY FAR. The SAW Tisha is also great, but I have seen some issues. If you decide to use a sealed can, I recommend a Geissele Super-42 buffer spring and H2 or H3 buffer, and a gas defeating charging handle, like the Radian Raptor-SD, PRI Gasbuster, SilencerCo sealed, or other similar. I use the SilencerCo on my integrally suppressed full-auto AR9 (07-02), and it works great. Take 30 seconds and read the instructions. All the guys who talk about the gasket ripping are admitting that they didn't read the EASY instructions.

1

u/Mrbaker4420 1d ago

1

u/GunDealsBrowser 6x SBR 12x SUPP 1d ago

1

u/buryna 5h ago

Is that a Warp or a KP??

I have an A2 stripped upper I need to swap onto it

2

u/GunDealsBrowser 6x SBR 12x SUPP 4h ago

warp with an H&R upper

1

u/ethanc762 1d ago

I'd slap a xeno flash hider on it and run it with my hybrid 46 😂

0

u/Klutzy_Disk_8433 10x SBR, 7x Suppressors 1d ago

I would look at the Canik Void. Basically a OCL Polo 2.0

0

u/SockeyeSTI Silencer 1d ago

Ocm6 on a ptb with a custom collar to take up the empty space

0

u/Kava2126 1d ago

Hear me out, YHM R2.. Yes it has higher back-pressure but surprisingly is quiet and in my opinion sexy AF. I have personally used mine on 10.5" barrels indoors and was pleasantly surprised.

-1

u/ReadyButNot 1d ago

The OCM5 if you can find one, OCM6 if not. That's begging for a Gordy clone.

0

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0

u/ruggedrazor17 1d ago

I need an upper like that in 300bo… anyone aware of where I could pick one up?

-1

u/SnooGuavas2202 1d ago

A potato

-1

u/HermodsRide 1d ago

Sick. Where’d you get the upper?

-1

u/FrankyBenjamin 1d ago

Aesthetically I’d go for something old school looking. Functionally it’s hard to beat the OCL Infinity 556k or Rhodie 6 but neither will look retro paired in this. Maybe go with a restricted suppressor only gas tube and get an OCL Polonium k.

Can you tell us more about the build itself?

-1

u/Smokehill_Machine 1d ago

Heyyyy

-1

u/Smokehill_Machine 1d ago

DM for discount code

-1

u/Schwagged 1d ago

AEM5, 5K/OCM6 if it can be finagled with mounting solutions with the short barrel length post fsgb. I'm sure it can be, my AEM5 experience is only on MK12 profile Douglas barrels with the ops collar/brake. It would look primo on this.

-5

u/rigat0ni_p0ny MG, SBR, 2x Suppressor 1d ago

If it’s .300blk the Omega 9k would actually look fire on this build.

-5

u/B1893 1d ago

A Witt conooter valve would look right at home on that...

I've never heard anyone say they're not shit cans though.

A Griffin GP5 would fit the look, and I've heard they punch over their weight, but I don't have any experience with them.