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Posted: 3/29/2009 9:22:08 AM EDT
Anyone know what the twist rate on the STG-556 is? Its not listed on specifications page of msarinc.com
Link Posted: 3/29/2009 9:34:23 AM EDT
Current mfg STG's are 1-8.... I believe their 20" bbl is the same.

There *may* have been some real early ones in 1-9 but this is for someone else to answer.
Link Posted: 3/29/2009 9:39:08 AM EDT

Originally Posted By BrianNH:
Current mfg STG's are 1-8.... I believe their 20" bbl is the same.

There *may* have been some real early ones in 1-9 but this is for someone else to answer.

I have an early LE OD and the barrel is indeed marked 1/9.
Link Posted: 3/29/2009 9:40:18 AM EDT
[Last Edit: 3/29/2009 9:42:04 AM EDT by rizzo5586]
my serial is in the 13xx range and I have a 1:8....I dont know exactly when the switch was made (passes question to dave) but i can tell you all after the serial i have, have a 1:8
Link Posted: 3/29/2009 9:52:03 AM EDT
My 20" has a 1:8 also (Gen IV).
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