A good stiff brush, And then shoot it. You can wiggle a smaller drill bit around the edges of the hole and get most of it out.
M4/AR15 Barrel drawing?
- Thread starter LVLAaron
- Start date
Fast14riot
Gold $$ Contributor
Lol, I've had several commercial barrels with a chip left in the gas port from drilling. It's one of the first things I check along with length of gas journal. Some are machined for gas block to butt up against the end and others leave room for the triangle clip to hold clamshell hand guards.
The longer the gas system the better unless its blackout. For Target work the mid length or rifle length is better because the bullet has left the barrel before the bolt opens so less movement. With the carbine gas system the bolt is moving by the time the bullet exits.
I drilled into a lead slug. I have a 300BO barrel to do, need to look for some slugs.
Bullets
One key to this, is not using a tool that creates a large hard burr. Reamers tend to roll a burr. Hole size does not need to be held that close.
I have done it numerous times, easy. And you can do different colors.
Are you talking Anodizing or Parkerizing, Theres only Mag Phosphate and Zinc Phosphate for parkerizing, So basically 2 colors.
Parkerizing, there is green,black and grey.
Which chemical do you use for each color?
Use a very sharp (new) drill bit .010” or more undersize of target diameter and follow up with the proper size very sharp (new) drill bit. Deburr with a few bullets down range.
I really enjoyed doing my first gasser barrel
Already researching data for the next.
LVLAaron
Gold $$ Contributor
It's got my head going to build an AR10 with a 6GT barrel. Would be an absolute killer in F Class AR Tac
Where did you source your extensions?
I got mine from WOA.
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