[Saiga-12C Modified]

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!

[Saiga-12C Modified]

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?

[Saiga-12C Modified]

Was the barrel originally 16.9"? Also, what were factory size gas ports, and was it a three port or four port?