Need some help on a solution, 16” barrel with MK18 arca handguard.

Eric32 · Nov 10, 2024

Hey guys I am swapping out a BA barrel for a Krieger on my MK18 SPR.

Problem: 16” barrel (it’s the only length I can get my hands on right now for a really good price) and a 16” handguard don’t exactly mix when I am using a plan B mount and cherry bomb on a converted SDN6

Solution: maybe find a muzzle device that moves the suppressor forward? Or some other type of solution.

camocorvette · Nov 10, 2024

I'm not familiar with that cans dimensions so I'm no help.

These are always an option on the handguard.

camocorvette · Nov 10, 2024

What do you need about 1/4" of either the barrel longer or handguard shorter?

Eric32 · Nov 10, 2024

Hoping someone with actual experience to chime in.

TonyTheTiger · Nov 10, 2024

Eric32 said:
Hoping someone with actual experience to chime in.

I've got actual experience with this method.

NHPiper · Nov 10, 2024

Your only option is cut the handguard or run a longer barrel. I would do the former. I think 16" barrels are the sweet spot of do it all. Find a guy with a local mill, or use the hacksaw and carefully file after. Spray it black or even better rattle can the gun.

msgriff · Nov 10, 2024

Kaw Valley Precision makes barrel extenders, as well as other mfg's. 3/4", 1" and 1-1/4" are common. Don't know how precise they would be for suppressor alignment.

NHPiper · Nov 10, 2024

Could be an option but that's stacking a lot of variables together.

TonyTheTiger · Nov 10, 2024

NHPiper said:
or use the hacksaw and carefully file after.

I was half joking when I quoted the hacksaw picture. A regular old miter saw with a wood blade will happily cut a handguard. I've cut a ton of aluminum with mine, you've just gotta have a solid hold of the aluminum so it doesn't catch and make a mess of things.
Used a miter saw and table saw to take 1/2" off this one and add the bevels for brake backblast clearance.

Eric32 · Nov 10, 2024

I am gonna look for a Q muzzle or suppressor mount that moves the suppressor clear of the hand guard. Someone has to make one of those

91Eunozs · Nov 11, 2024

+1 for cutting the handguard.

Go from this:

…to this:

Used a Dremel for the cutoff, but then had the end machined square on an end mill, then Cerakoted.

Eric32 · Nov 11, 2024

thanks to all you dremel warriors but i am not gonna cut my 400$ rail system.

I think I found a solution with the Atlas XL

Atlas XL – Rearden MFG

www.reardenmfg.com

I’ll keep everyone posted later on when I get everything in.

B4forever · Nov 15, 2024

I’d wait for an 18” barrel. If you’re going to have the length anyways, you might as well get the benefit of more velocity and a RLGS. Also, running some weird adapter isn’t exactly stacking the odds in your favor that you’ll experience the accuracy a Krieger can produce. Either way, I hope it works out for you.

utvolsfan · Nov 16, 2024

Rearden makes good stuff, I’m sure you will be happy with it.

Another option would be the LPM pin annd weld eclipse flashhider. It is a plan b mount and has extended threads on the back to make it longer without making go further into the can.

Eric32 · Nov 16, 2024

JR1200W3 said:
My concern is the SDN6.....

What are you so concerned about?

TonyTheTiger · Nov 16, 2024

Eric32 said:
thanks to all you dremel warriors but i am not gonna cut my 400$ rail system.

Lol, you're the guy that went and spent big money on a HG and barrel in lengths that are well known to be incompatible, and now you want the internet to solve the problem you created with no sarcastic or questionable answers. Good luck with that.

Eric32 · Nov 16, 2024

TonyTheTiger said:
Lol, you're the guy that went and spent big money on a HG and barrel in lengths that are well known to be incompatible, and now you want the internet to solve the problem you created with no sarcastic or questionable answers. Good luck with that.

I was hoping to get some advice, which I did get from some knowledgeable users on here. So thanks for your contributions. It was an easy solution actually. Just seeking out knowledge on different products that are made.

Hope this would be of benefit to others down the road.

And also big money is not 400$*

TonyAngel · Nov 21, 2024

I've used the KVP barrel extenders without issue, but I was direct threading. They're cheap and worth a try though.

hlee · Nov 21, 2024

If $400 is not big money, there shouldn’t be any heartburn in modifying it to suit the purpose…

Eric32 · Nov 21, 2024

I am not a gun plumber, and it seems silly when the the option is out there. Which is already being solved just waiting on the parts to come in. So now this is information for someone’s else if they run into the same
Issue.

But your input is valuable and treasured.

Need some help on a solution, 16” barrel with MK18 arca handguard.

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