AR180B Flattop and AR15 Flash Install
- Thread starter Snuffy
- Start date
With regard to the flattop, I believe that Jo Dlask did a Picatinny rail direct to the the upper for one of the guys here, IIRC he Tig'd it to the upper. Also, Armedsask (the AR180b guru) has had his original barrel turned at the correct length with a step cut, then threaded for an AR15 flash hider. It's not as easy as you might think it would be, because part of the integral flash hider is needed to ensure the rifle has enough barrel length to remain non-restricted.
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As mentioned, dropping a full length rail on the top of a flat receiver is bonehead simple. I've done two drilled and tapped and seen the tigged one. The reason I did drilled and tapped is I used aluminum rails.
Threading the barrel isn't as easy is one might think. The rifling on the barrel is only 18.25" long. If you cut your muzzle brake off to the end of the rifling, as that is the legal interpretation of barrel length, then your rifle is 1/4" too short. Heavens no, think of the children!
As such, you have to leave 1/4" or so of the muzzle brake attached. This is made all the more enjoyable by the location of the holes on the muzzle brake.
It's almost easier to just hack the thing back to the end of the rifling, put your flash suppressor on, and not tell anyone. The flash suppressor will actually make your rifle longer than the original. Then again, that would be illegal and your rifle would be prohibited due to having a barrel 1/4" too short. Think of the children!
One of these days I'm going to try slapping an AR15 barrel on mine, and then all out problems will be solved.... if it works.
Threading the barrel isn't as easy is one might think. The rifling on the barrel is only 18.25" long. If you cut your muzzle brake off to the end of the rifling, as that is the legal interpretation of barrel length, then your rifle is 1/4" too short. Heavens no, think of the children!
As such, you have to leave 1/4" or so of the muzzle brake attached. This is made all the more enjoyable by the location of the holes on the muzzle brake.
It's almost easier to just hack the thing back to the end of the rifling, put your flash suppressor on, and not tell anyone. The flash suppressor will actually make your rifle longer than the original. Then again, that would be illegal and your rifle would be prohibited due to having a barrel 1/4" too short. Think of the children!
One of these days I'm going to try slapping an AR15 barrel on mine, and then all out problems will be solved.... if it works.
One of these days I'm going to try slapping an AR15 barrel on mine, and then all out problems will be solved.... if it works.
Do they use the same barrel extension?
That sounds compicated 1/4" who measured that up
Maybes I will drop this thought for now. The Storwerks extended rail looks and operates soundly.
Maybe just a MidWest raile forearm instead.
The compensator still makes me want to do it for some reason though.
Maybes I will drop this thought for now. The Storwerks extended rail looks and operates soundly.
Maybe just a MidWest raile forearm instead.
The compensator still makes me want to do it for some reason though.
Nope, but I'm told they are the same threads. Would be as simple as threading an AR180B barrel extension on an AR15 barrel, head spacing, and drilling the gas port.
Then machining up a custom gas block.
