Special Purpose Rifle

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griz59

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Hey guys! This is my first post here on The High Road so I apologize in advance for any typos or other mistakes. Anyways I've been putting together my first AR build by replacing pieces one at a time from a host rifle (Brothers n Arms xephos) My intent is to turn it into a SPR for medium to long range engagements (100-600 yards). This gun will be a Coyote hunter, range gun, and a SHTF weapon. I would like to ask for your thoughts on the build so far and recommendations for future parts such as: triggers, flash hiders, suppressors, slings, bipods, scopes, etc.

My current setup is: 16" Black hole Weaponry 416 Stainless Steel match grade barrel with a 1/8 twist and polygonal rifling, Cryptic coatings "Mystic Black" BCG (if you are not familiar with cryptic coatings look them up, amazing product), SLR 10" key mod solo rail, magpul ctr stock, magpul MOE-k2+ grip, A2 flash hider, surfire x300 light, mbus flip up back up sights, Vortex spitfire 3x (good for the medium stuff), all resting in/on a Brothers n Arms forged receiver group, trigger, and charging handle.

Also, any thoughts or experience with JP Enterprise's silent capture spring? I know it doesn't "fix" any problem but that sproooing noise gets annoying after a while.

Thanks!
Cy
 
While a 16" can get out to 600 an 18 or 20" will do it better. My AR runs a 20" Colt 1:7 barrel and have made hits at 425y so often that it gets boring. Barrel swaps are fairly easy, upper swaps are even easier.

As far as triggers go Geissele make some amazing triggers but are not cheap.

I run a 4x ACOG on my rifle but it is terrible for prairie dogs. I need to get a higher power, finer reticle, scope to be productive at varmints.

I run the CTR stock and a MOE+ grip and really like both. I run a Troy Alpha float tube and stock GI internals. For whatever reason my rifle does not sprong when I fire it. Or I just don't hear it anymore...
 

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Brothers n Arms?

I never heard of it before.

What kind of trigger comes with it??

Regardless, You might want a better trigger for a 600 yard SPR!

rc
 
I think you'll be good to 400 with your set up. Getting to 600m with most rifles takes additional skills and study; wind, weather, etc start to make it a lot harder. Also, not many people have a 600m range to shoot on these days for practice.

Study done by the military years ago determined that in most places 300m was the typical long shot you would have (not could have if you worked at it, but likely would have).

I think I would leave you set up alone and shoot it a lot before I messed with anything. 500 rounds on various days/settings will point out things you may want to change much better than anything we could advice on line.
 
Brother n arms is a local gun shop in Ellensburg Washington. They make their rifles in house one at a time. Nothing fancy but they make quality, functional products for civilians and local law enforcement.
 
If you really want to reach out there you might look at something in a 1:7 twist too. I shoot 77gr SMK bullets in my AR and they have proven to be very accurate. The extra weight will help reach all the way to 600y, but they need a fast twist. 1:8 should do it, 1:7 will do it.
 
Put a 3-9x class scope on it and go shoot the rifle. Until you do, you won't know if what you got is working, or if something needs to be changed or tweaked.

Did you fix your flash suppressor?
 
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My first thought is that if you aren't handloading, start doing that right away.

Keep the upper you have now and build a new one when you really know what you need.

A scope with target turrets is way more functional than hunter turrets or BDC marks, though BDC is nice to have. Check out Nikon scopes that have both target turrets and a BDC reticle.

No matter what scope you get or have, get a scope mount with a 20 or 30 MOA offset built in. You almost never need to adjust your scope "down" much at all, but you'll be clicking "up" a lot. Maximize the scope's adjustment range with an offset mount.

You mentioned suppressor, if you can go that route, definitely do it. Forget about brakes or flash hiders. If a suppressor is not really a possibility, then a good brake will allow you to see your hits or misses at distance. A standard flash hider will not.

The only other thing I'd say is trigger. Check out the Rock River National Match varmint class trigger. It's really nice at a great price. I hate to say it but Ebay is the best place to find them.
 
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