[ARCHIVED THREAD] - changing AR-15 upper

Posted: 4/21/2007 2:18:54 PM EDT

I want to change my A2 upper to an flattop. I will be using my old barrel, tube, and bolt. I was told that I do not need to head space the bolt to the barrel bacause the bolt "lock" onto the barrel, which I know. But I still think that I need to headspace. What do you think?

Bob The Nailer

Posted: 4/21/2007 2:22:51 PM EDT

[#1]

Doing it wont hurt you. Not doing it might or might not. If you can afford to do it/have the tools why not?

Posted: 4/21/2007 2:42:58 PM EDT

[#2]

No you do not need to headspace it. As long as you are using the same barrel & bolt there should be no need to.

If I am wrong, someone please enlighten me.

Posted: 4/21/2007 3:18:18 PM EDT

[#3]

Since you are reusing the bolt and barrel, you don't have to check headspace.

I've done this same swap and had great results.

Have Fun,

Geof

Posted: 4/21/2007 3:27:27 PM EDT

[#4]

I've done this swap a few times, no problems.

Posted: 4/21/2007 4:14:17 PM EDT

[#5]

Great, I will ordering tools to do the job. I have the multi-tool, just need the flattop and the upper receiver tool.

Bob

Posted: 4/21/2007 11:17:46 PM EDT

[#6]

Thanks to this forum I swapped receivers on my SBR going from A2 to A3, you will find all the info you need to. Be careful with torque values and check everything twice; THINK before and the operation is quite simple.

[ARCHIVED THREAD] - changing AR-15 upper

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[ARCHIVED THREAD] - changing AR-15 upper

[ARCHIVED THREAD] - changing AR-15 upper