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re: Ruger AR556 vs S&W M&P Sport II

Posted on 8/31/16 at 6:42 am to
Posted by bapple
Capital City
Member since Oct 2010
11915 posts
Posted on 8/31/16 at 6:42 am to
This question comes up a lot but I think the main differences:

Ruger has a 1:8 barrel twist;
Ruger has a machined front sight block rather than cast;
S&W has an integrated trigger guard;
Ruger's handguard has a proprietary threaded delta ring;
S&W has a better factory trigger;
Both have about the same profile barrel;

You can't go wrong with either one. I lean Ruger because of the barrel twist but the accuracy from the S&W has gotten stellar reviews in tests regardless of ammo. So I would say it's a wash.
Posted by Clames
Member since Oct 2010
16644 posts
Posted on 8/31/16 at 8:36 am to
quote:

I lean Ruger because of the barrel twist but the accuracy from the S&W has gotten stellar reviews in tests regardless of ammo.


1:9 twist is better for all but the heaviest or longest 5.56 bullets. USMC figured that out back in the 1980's, don't know why some still think higher twist rates are needed when they'll never shoot anything heavier than M855.
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