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9/22/2017 12:11:25 AM
Posted: 6/1/2003 9:01:04 PM EDT
I just aquired a brand new Bushmaster upper less the bolt and carrier. Can I just buy a new bolt and carrier and put in this upper and not worry about headspacing it?

I have heard both yes you can just buy a new bolt and carrier and put them in your gun and then hit the range and also being told that you must headspace a bolt and carrier for the new upper.

Any help would be appreciated on this one guys, I don't want to damage my new upper.
Link Posted: 6/1/2003 9:25:14 PM EDT
Your new Bushmaster upper had its headspacing set. Get a new, mil-spec, bolt/carrier assembly and your good to go!
Link Posted: 6/1/2003 9:29:04 PM EDT
check the headspacing with the bolt you intend to use with that upper! (see your other post)
Link Posted: 6/1/2003 10:24:38 PM EDT
You can check the headspacing a thousand times then have your buddy and his mother each check it a thousand more times and there's still not a damn thing you can do about it. Assembling from all new parts will be fine drop it in an go to town.
Link Posted: 6/3/2003 8:27:59 AM EDT
And to add to Dave's statement above (which I agree with), you may purchase your bolt carrier assembly from any of the top suppliers, DPMS, Bushmaster, Rock River, Olympic Arms, Armalite, etc, and your are OK. Go shoot.
Link Posted: 6/3/2003 2:36:10 PM EDT
[Last Edit: 6/3/2003 2:40:06 PM EDT by sfcret]
if it was me, I wouldn't just buy a bolt group and put it in the rifle without first checking out the head space with at least a field gauge......it's a 99 percent chance that a new upper with a new bolt will probably be OK for head space...but when your face is only a couple inches from the receiver, are you really going to take the chance that it is really OK? head space gauges cost a lot less then reconstructive surgery, or a funeral. it's your call.
Link Posted: 6/3/2003 3:04:46 PM EDT
I agree with Dave.
Link Posted: 6/3/2003 7:18:41 PM EDT
Personally, [b]I[/b] wouldn’t fire it before verifying that the headspace is OK (even though it almost certainly is). If others on this board wish to do otherwise, that’s their prerogative. [:D]
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