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Old 06-14-2011, 12:23 PM   #11
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Mine wouldnt mate up with a colt m16 upper dont get any more milspec than that, or my rra upper or my dpms upper.

For the price they charging for the sr556 it shouldnt be a crapshoot

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Old 06-14-2011, 11:46 PM   #12
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Both my Ruger SR556 and Sr556C lowers mate up to my Colt LE6920 and 6601. Seems more the rule than the exception.

Oh well, sorry you have an out of spec lower.

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Old 06-15-2011, 12:34 AM   #13
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Quote:
Originally Posted by goretro77 View Post
Both my Ruger SR556 and Sr556C lowers mate up to my Colt LE6920 and 6601. Seems more the rule than the exception.

Oh well, sorry you have an out of spec lower.
had. traded it off for a 1903a3. im usually pretty leary of buying a ruger product but at the time it looked like a good rifle. ive had far more shoddy items from them than good ones but ive always found someone that really wanted it despite the flaws.

it was a good shooter i had no complaints there but im a person that likes multi-tasking my ar15s and the sr556 just didnt stack up.
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Old 06-15-2011, 05:26 AM   #14
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I actually like Ruger and own three. But when it comes to the AR, there are so many better choices than Ruger. Also you have to wonder where their true allegiance lies since they've up until now been the maverick in the .223 world with their Mini-14.

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Old 06-15-2011, 11:22 PM   #15
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Quote:
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had. traded it off for a 1903a3. im usually pretty leary of buying a ruger product but at the time it looked like a good rifle. ive had far more shoddy items from them than good ones but ive always found someone that really wanted it despite the flaws.

it was a good shooter i had no complaints there but im a person that likes multi-tasking my ar15s and the sr556 just didnt stack up.
Can you explain exactly what you mean by multi tasking your ARs?

SWAT likes the SR556:
Tactical-Life.com » RUGER SR-556 5.56mm
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Old 06-15-2011, 11:26 PM   #16
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Thanks, for all the input. I think i'll follow the advise of those who say to build one.

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Old 06-15-2011, 11:29 PM   #17
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Quote:
Originally Posted by goretro77 View Post
Both my Ruger SR556 and Sr556C lowers mate up to my Colt LE6920 and 6601. Seems more the rule than the exception.

Oh well, sorry you have an out of spec lower.

Just to make sure the right information gets out there
I had another person from arf.com try his Ruger SR556 lower with Colt uppers and they all mated up. Cycled the bolt back and forth with no issues.
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Old 06-15-2011, 11:48 PM   #18
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Thanks, for all the input. I think i'll follow the advise of those who say to build one.
If you live around Northern IL PM me, I'll be happy to let you shoot mine and come to your own conclusion through experiencing it firsthand.
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Old 06-16-2011, 12:13 AM   #19
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not my videos but these are excellent reviews:


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Old 10-08-2011, 02:05 PM   #20
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This tread may be old but I wanted to add something. This morning I replaced the trigger in my SR 556 with a Rock River National Match setup. The Ruger trigger was okay, a bit heavy, but entirely serviceable. I never checked the weight but I am told that the factory setting was about 12 pounds. The new Rock River trigger took about 15 minutes to install. Keep in mind I had never done any "work" on an AR trigger. Now with all my vast "experience" I think I could cut that time in half, it really is that simple. Anyway, the Rock River trigger pull is a crisp four pound joy. I expect it will get a little better as it wears in.
You might assume that I replaced the Ruger trigger unit to get a better trigger pull, and that would be partly right. The truth is though, my Ruger had developed the habit of going full auto whenever it chose. Full auto is fun..........when you expect it and want it, any other time is bad. I had put a couple thousand rounds downrange through the Ruger in the last six months so this was not a new gun "break in" issue. Rather than endure a warranty issue with Ruger I just replaced the trigger group. The old Ruger parts don't show any excess wear, but they were letting the gun run wild sometimes. Slam fire rate of fire is impressive to say the least! Anyway, I'll post again later if there is anything to add.

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