Modern Sporter - Build Discussions

ATRS Shaun said:
Haven't heard of any at all, what's he encountering?
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I can send you a video of you? PM me, or i can drop in thr shop
If you reset the trigger manually there is a definitive grind
Trigger has an honest 1000 rounds on it from a previous ar build, fidnt have the issues and "should" be broken in
 
jonny427 said:
What kind of luck is everyone having with the 18.6 MRA barrels? Ive been hearing mixed things.
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I have a MRA 4140 18.6 pencil barrel. Mine is made from a IBI blank. shoots 1.0-1.25 MOA consistently with PPU 55grain M193 bulk ammo. 0.8-0.9 MOA with BHA 77grain OTM (mk262 mod 1 ammo).

The early MRA barrel were made from Green Mountain Blanks, then MRA switched to IBI. IBI raised prices and MRA is back to Green Mountain Blanks I believe. They are CNC machined, some of the chambers I have seen were ROUGH, mine looked good, I bought it. It headspaced correctly with my bolt. Happy with it so far.

Considering some of the chambers I have seen, I wouldn't buy one without looking at it in person. But I've heard that MRA is really good about warranty if you get a dud.
 
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mileageman said:
I have a MRA 4150 18.6 pencil barrel. Mine is made from a IBI blank. shoots 1.0-1.25 MOA consistently with PPU 55grain M193 bulk ammo. 0.8-0.9 MOA with BHA 77grain OTM (mk262 mod 1 ammo).

The early MRA barrel were made from Green Mountain Blanks, then MRA switched to IBI. IBI raised prices and MRA is back to Green Mountain Blanks I believe. They are CNC machined, some of the chambers I have seen were ROUGH, mine looked good, I bought it. It headspaced correctly with my bolt. Happy with it so far.

Considering some of the chambers I have seen, I wouldn't buy one without looking at it in person. But I've heard that MRA is really good about warranty if you get a dud.
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Is there anyway to identity which blank the barrel was manufactured with?
 
jiffx2781 said:
Got a smokin' deal on a 15" Midwest Industries handguard from Brownells. $189.95 regular on sale for $82.99 minus 11% discount code brought it down to $73.86 :dancingbanana::dancingbanana:

MI-AR10SSM15-2.jpg
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Wish their model of this that fits the Stag 10 was on sale like that!!! :(
 
jg007 said:
no. they are too busy this week to take a look. we will try next week. we unfortunately dont have another trigger to try, but would think the geiselle would be within spec....
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You would think so right .. I know the SSA-E model works and they look really similar , seems like there are quite a few that work in mil-spec AR,s but not the MS. Hope you figure it out , thanks for the reply
 
EastCoastLowbedder said:
You would think so right .. I know the SSA-E model works and they look really similar , seems like there are quite a few that work in mil-spec AR,s but not the MS. Hope you figure it out , thanks for the reply
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np, keep you posted on here and there is a thread in black guns as well on triggers for the MS
 
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