macaholic 5 Posted November 12, 2012 Report Was the barrel originally 16.9"? Also, what were factory size gas ports, and was it a three port or four port? Quote Link to comment
Tripz 5 Posted November 13, 2012 Report The barrel was originally 580mm so it was almost 23 inches. I havent opened up the gas port yet so I dont know how many holes are in it. Thanks for the comments. Quote Link to comment
macaholic 5 Posted November 13, 2012 Report If the barrel was that long, I would think you would have to open up the gas ports now that the barrel is as short as it is. Have you test fired it yet? Quote Link to comment
macaholic 5 Posted November 13, 2012 Report I have three S-12's that I cut the barrel to 16" and only one of them did not require the gas ports to be modified or enlarged. One of them was a three port gun and after a series of torture tests, I decided to add a fourth port at .073 to match the other three at .073. The second S-12 was a four port gun with all four ports at the factory .063 wich I opened up to .076. And my third S-12 has four factory ports at .063 and it runs everything including low brass on the #1 gas setting. Go figure! Quote Link to comment
Tripz 5 Posted November 24, 2012 Report Had the 3 gas ports enlarged and replaced the recoil spring. Works like a charm now! Quote Link to comment
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