so i picked up my bushmaster ar15 about 2 years ago, it has the A2 upper (so fixed carry handle) this is getting really annoying, it it better for my to just buy a new a3 upper and swap in my CH+BCG or buy just the a3 receiver and have someone reuse all the pervious parts off my a2 upper. ( is this even possible? or can some parts be used while others can not?) looking for the best option. i would rather spend sub $100 on a receiver than 4-500 on a new upper
ar15 question
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The only thing that would keep you from getting a new upper receiver and swapping parts is if you have a pinned muzzle brake that you can't get a gas block over.
Even then you could dremel the gas block off and get a new 2 piece gas block to replace it.
Even then you could dremel the gas block off and get a new 2 piece gas block to replace it.
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If the gas block is working ok I would just leave it.
You can keep the gas block if you want to even if you want a free float you can still put a nice rail. Samson is a good one that goes over the existing
system barrel nut but you do not need to spend so much. I think there are others.
You can also cut the post and grind/round it a little and put any rails you want on top probably over the block to cover the cut part but I have seen some people finishing with the stone and blueing/painting that you could not tell that apart from a low profile one.
A reciever you can get for $70 stripped. Just swap the forward assist and the ejection cover parts.
You can keep the gas block if you want to even if you want a free float you can still put a nice rail. Samson is a good one that goes over the existing
system barrel nut but you do not need to spend so much. I think there are others.
You can also cut the post and grind/round it a little and put any rails you want on top probably over the block to cover the cut part but I have seen some people finishing with the stone and blueing/painting that you could not tell that apart from a low profile one.
A reciever you can get for $70 stripped. Just swap the forward assist and the ejection cover parts.
so the hardest part is prob getting the barrel off the old receiver and onto the new? would a shop do this work? or anyone that knows the how to on building AR's as i don't have the tools
maybe i can pay a few dollars to have someone help me and learn at the same time
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11,402 Posts
The AR is a gunsmiths lego. just go to google, youtube, talk to a few folks, borrow a couple of tools and in no time you will be up and running.
If you are not mechanically oriented or cannot tell the difference between a hammer from a screwdriver like my cousin then take it
to the shop otherwise it could be a fun workbench project.
Do pay attention to the torque settings and put the grease and pins where they belong.
You need the barrel nut wrench and some punch sets too.
If you are not mechanically oriented or cannot tell the difference between a hammer from a screwdriver like my cousin then take it
to the shop otherwise it could be a fun workbench project.
Do pay attention to the torque settings and put the grease and pins where they belong.
You need the barrel nut wrench and some punch sets too.
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