I bought my mag used and am looking to replace the barrel (which, like the rest of the setup, was not taken care of as well as one would have hoped 
). At any rate, I have two questions about barrel selection:
1) Given that mag barrels include the breech, is there any adjustment in measurement I need to make? In other words does a mag barrel that's advertised as "12 inches" actually measure 12", or something like 13"?
2) AGD has pointed out that the optimum barrel length efficiency-wise is 8-10 inches (unported). What barrels out there have unported segments this long? Everything seems ported up the wazoo, and I'd like not to have to buy an 18 inch barrel
in order to get eight useful inches.
I appreciate any and all help in this matter. Thanks.
). At any rate, I have two questions about barrel selection:1) Given that mag barrels include the breech, is there any adjustment in measurement I need to make? In other words does a mag barrel that's advertised as "12 inches" actually measure 12", or something like 13"?
2) AGD has pointed out that the optimum barrel length efficiency-wise is 8-10 inches (unported). What barrels out there have unported segments this long? Everything seems ported up the wazoo, and I'd like not to have to buy an 18 inch barrel
in order to get eight useful inches.I appreciate any and all help in this matter. Thanks.
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