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Old 05-07-2017, 08:37 PM   #1
Robhd04
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Default Armalite ar-30- 338 lapua

Anyone know what I need to mount a hybrid on this rifle? The threads are 5/8x18.
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Old 05-07-2017, 08:44 PM   #2
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a gunsmith with a lathe.
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Old 05-07-2017, 09:02 PM   #3
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I wouldn't use an adapter on a gun going for great accuracy. I'd have a gunsmith chop back and rethread. Should be under $150.
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Old 05-07-2017, 11:38 PM   #4
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Okay thanks, I'll have to look into it.
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Old 05-08-2017, 01:31 AM   #5
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Okay thanks, I'll have to look into it.
And ask the gunsmith if he indicates off the bore while your talking to him.
If not walk away.
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Old 05-10-2017, 07:46 PM   #6
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I have a kimber Montana 84m. I'm wondering if I should get it threaded too? It's a.308 that weighs a little over 5lbs.
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Old 05-10-2017, 08:44 PM   #7
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I have a kimber Montana 84m. I'm wondering if I should get it threaded too? It's a.308 that weighs a little over 5lbs.
Nice looking rifle.

I'd put your calipers on the barrel and see how much meat you have there. Is it enough to thread w/o heroic efforts?
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Old 05-10-2017, 10:10 PM   #8
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I'd have to let a professional make the call. I could measure it though
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Old 05-11-2017, 12:08 AM   #9
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I'd have to let a professional make the call. I could measure it though
IIRC for 5/8 you want somewhere around 0.7" for the shoulder or it's a no-go.

Thread all the things.
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Old 05-11-2017, 12:37 AM   #10
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Ok thanks, I'll measure it when I get a chance
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Old 05-11-2017, 07:04 AM   #11
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It's likely going to be very thin. I'd give Dave @ Liberty Suppressors a call on that one. I don't know what kind of wizardry is done in those circumstances.
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Old 05-11-2017, 08:16 AM   #12
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It's likely going to be very thin. I'd give Dave @ Liberty Suppressors a call on that one. I don't know what kind of wizardry is done in those circumstances.
Apparently a muzzle brake is offered that is 7/16x28 and a 7/16-5/8 adapter can be had as well.

Are all of them already threaded to be ready for this awesome accessory?

ETA: before anybody gets too excited all these thread posts are about the Kimber 84m and not the 308 AR

according to one image I found it appears to come equipped with threads for your $1500-$1800 (last image)

Has anyone tried to unscrew the end of one?

EATA: according to Lilja the contour is 0.565" at 22" and you'd have to go all the way back to ~6" to find ~0.7" of meat

http://riflebarrels.com/factory-contours/
Kimber M. 84M 1.050″ for 2.75″ then radius over 2.75″ to .710″ then st. taper .565″ at 22″ (.512″ at 28″, .0088″/inch)






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Old 05-11-2017, 06:43 PM   #13
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Mine isn't threaded
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Old 05-11-2017, 06:59 PM   #14
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Man that blackout is even lighter at 4lbs. 13ozs! Lighter than some pistols!
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Old 05-11-2017, 09:12 PM   #15
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Mine isn't threaded
Bummer.

I would call Dave like Twinsen mentioned, he'll tell you straight if anything can be done without an adapter or heroic efforts like Stan mentioned.

With that thin profile I imagine POI would shift dramatically between suppressed and unsuppressed but someone else can chime in with actual experience.

Might be worth dropping $600 for something with a shootable bull profiled 18"-20" barrel.
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Old 05-11-2017, 09:41 PM   #16
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Yeah, I got this rifle as an ultralight that I don't mind carrying all day. I just thought it would be nice to have the option to suppress it too. I still have a lot of other hosts.
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Old 05-11-2017, 10:21 PM   #17
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It is a nice rifle. Wouldn't be near as nice with the 6" barrel mod required for a proper threading.
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Old 05-11-2017, 11:22 PM   #18
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No sir it sure wouldn't
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Old 05-12-2017, 12:24 AM   #19
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Barrett released a sub 5lb threaded bolt gun too.
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Old 05-12-2017, 02:32 AM   #20
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Somebody buy one and we can compare and review.! lol
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