Headspacing a non-matching barrel with an oversize pin Build your own AK AK47

How to headspace your barrel with an oversized pin when using a non matching barrel for your build.

#Note this video is not yet available on the DVD.

Category:

Howto & Style

Tags:

• BuildyourownAK
• headspace
• barrel
• oversize
• pin

[as45400]

slow that reamer down sucka!

[BuildyourownAK]

@as45400 I had it on the lowest speed, which is 600 rpm IIRC. The video framerate makes it look like it's going faster than it actually is.

[gorak142]

does a barrel with a matching serial number need to be checked for headspace?

[BuildyourownAK]

@gorak142 In my opinion every build needs to be checked for headspace. It is possible to install a barrel incorrectly on a numbers matching kit. IMO, if you are building guns, you check headspace, period.

[dovii4ever]

If you have a virgin barrel which does not have the barrel pin groove can your drill like this to create the grove?

[BuildyourownAK]

@dovii4ever with a virgin barrel I would plunge a 7mm end mill to keep the drill from wandering and give the drill a flat surface to start. Follow up with a slightly smaller drill, then chase it with a 7mm reamer and use the factory barrel pin.

[DanTheVikingr]

So, What exactly happens here? Does putting the oversized pin in just pull the barrel out to the right headspacing?

[Duckyistrippin]

so the reamer you went with is about a .300 size in this video, right? just trying to make sure i have my math correct.

[Duckyistrippin]

@cjjr129 yugo barrel works with some light mods

[dragon62839]

salam 3laykom anta massri ?

[m0ondoggy]

@cjjr129 not if you want to use the original sight and gas blocks. The Bulgarian AK was a Type III pattern rifle and had a much thicker barrel with thicker mounting journals for the blocks. I'd search for a Type III AK pattern barrel.



[cjjr129]

would a romainian gp75 7.62x39 barrel work with my original bulgarian ak 47 kit and trunnion? trunnion is original bulgarian also.

[jopit78]

does anyone know if a yugo 7.62 barrel will work with a romanian kit?

[duckhunterflyfisher1]

can you do a video on a new barrel head space. also can you do one with a barrel that is oversized, I am assuming you mill the diameter of the barrel component vs messing up a $100 barrel. Can you advise correct tolerances when mating components to a barrel, or suggest book, video etc that has that info?

[preparehandbook]

Great video. I see how these methods could be used on many applications where 2 holes don't line up. Thank you for the great instructional videos It has really helped give me confidence to explore doing a build myself (I have always wanted to do a heavy barrel build).

[KaletheQuick]

Show us some completed rifles man! How well do they shoot!? ^_^

[710571514]

牛啊