M4/AR15 Barrel drawing?

[Sniperhandle]

One thing that I have wondered about for a long time is how do you deburr the inside of the gas port?

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.

 

[Fast14riot]

One thing that I have wondered about for a long time is how do you deburr the inside of the gas port?

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.

 

[LVLAaron]

I plan on using a carbide reamer, and some ammo to deburr

 

[Sniperhandle]

If I'm being honest I don't know a whole lot about the pros/cons of different length systems. For this one I just cloned a WOA varmint barrel. They use their own length gas system - It was 11.125 from the extension to the gas block shoulder

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.

 

[Walt Krafft]

I drilled into a lead slug. I have a 300BO barrel to do, need to look for some slugs.

 

[SKWERLZ]

One thing that I have wondered about for a long time is how do you deburr the inside of the gas port?

Bullets

 

[Walt Krafft]

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.

 

[whatsupdoc]

Just did some googlin - I didn't realize this was something I could do at home!

I have done it numerous times, easy. And you can do different colors.

 

[Sniperhandle]

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.

 

[whatsupdoc]

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.

 

[Sniperhandle]

Parkerizing, there is green,black and grey.

Which chemical do you use for each color?

 

[msalm]

One thing that I have wondered about for a long time is how do you deburr the inside of the gas port?

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.

 

[LVLAaron]

Happy to report that the barrel is an outstanding shooter. Glad I never need to buy another AR barrel again.

 

[SKWERLZ]

Happy to report that the barrel is an outstanding shooter. Glad I never need to buy another AR barrel again.

I really enjoyed doing my first gasser barrel
Already researching data for the next.

 

[LVLAaron]

I really enjoyed doing my first gasser barrel
Already researching data for the next.

It's got my head going to build an AR10 with a 6GT barrel. Would be an absolute killer in F Class AR Tac

 

[SKWERLZ]

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.

 

[LVLAaron]

Yep, same.