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AR15.COM
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6/30/2010 8:13:16 AM EDT
Can somebody please explain?  Some come with that ugly thread protector, some come with a brake, what gives?
7/1/2010 6:55:38 AM EDT
[#1]
Yes, mainly the differences are the furniture and flash hiders but (obviously) also the round they shoot

-difference between the arsenal sgl-20 and the 21 is that the 21 has a grenade launcher mount
-The sgl-31 series are in 5.45
-The SA-M7 series have milled recievers
-The slr-106 series are in 5.56

You can see all the different models on their website here
http://www.arsenalinc.com/index.htm

I have an sgl-20 and so far it is my favorite AK I have ever owned
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