I installed a KKM drop-in barrel into my Glock 17L. It fits like a glove. I mean it has maybe .001" of clearance in the lockup areas whereas the stock barrel has more than .004".
I tried some 147 HST benchrested at 15 yards. Here's how the stock barrel shoots them:
And here's how the KKM barrel shoots them:
I also shot FCAE, WWB, PB, RA9T, and some 124gr handload I slapped together. In almost every case the KKM barrel shot 50% smaller groups. The only exception was my 147gr handload using Bullseye and The Fiochi 147gr FMJ crap I bought.
These aren't the best groups, but the heat and the flies were spoiling my focus. Overall, the KKM barrel cut the groups in half. At $165 it is a bargain.
I tried some 147 HST benchrested at 15 yards. Here's how the stock barrel shoots them:
And here's how the KKM barrel shoots them:
I also shot FCAE, WWB, PB, RA9T, and some 124gr handload I slapped together. In almost every case the KKM barrel shot 50% smaller groups. The only exception was my 147gr handload using Bullseye and The Fiochi 147gr FMJ crap I bought.
These aren't the best groups, but the heat and the flies were spoiling my focus. Overall, the KKM barrel cut the groups in half. At $165 it is a bargain.