If a gas block journal needs knurling it's better to peen the side of the journal opposite the gas port. This will pull the gas block down against the port and create a seal.
Originally Posted By AEnemaBay: If a gas block journal needs knurling it's better to peen the side of the journal opposite the gas port. This will pull the gas block down against the port and create a seal.
View Quote
That totally makes sense. Is this a bad thing or does it just happen that the block and journal do not mate well at times?
Does it affect the durability in anyway? Is the gas block still robust after knurling and pinned in place?
Originally Posted By Milspec99: Actually my mistake. I should have inquired about knurling the barrel under the front sight block. Same premise I am sure.
View Quote
I don't have a knurling tool but ran into this issue with an AoA barrel and Bulgarian parts. The FSB could be practically slid on by hand. I just used an auto center punch to stagger small divots into the journal where the FSB would install, creating small raised areas around the divots. It worked just fine.