450B Bolt

[Al in Mi]

where can I get a bolt for a 450B?

[Texas Sheepdawg]

You could probably call bushmaster and get one shipped to you pretty
Quick.
But I think the carrier is then same as the AR15 5.56.

[bigbush]

The carriers are the same, I don't think the bolt it's self is.. could be wrong thou.

[Texas Sheepdawg]

The 450B bolt is not the same size as the 5.56/223 bolt.
I'm pretty sure you will have to get one through bushmaster.
That is, if your original upper is a Bushmaster upper.
You might want to ask some of the more knowledgeable guys
On here, but you may have to lap a new bolt to the barrel also.
Let's see if they will weigh in on this.

[wildcatter]

The 450B bolt is not the same size as the 5.56/223 bolt.
I'm pretty sure you will have to get one through bushmaster.
That is, if your original upper is a Bushmaster upper.
You might want to ask some of the more knowledgeable guys
On here, but you may have to lap a new bolt to the barrel also.
Let's see if they will weigh in on this.

What is it you want to do, AL? With a little more info I could better advise, in the mean time, you can either get a new bolt from Bushy or modify an AR bolt. Ya just gotta open an AR bolt to something slightly larger than .473" and then dust in the extractor or buy a 450 extractor or use an AR extractor made for the Russian short, 7.62X39 or, or, or..t

[Al in Mi]

looking to build a stainless barreled carbine upper.

[Clipity]

MGI Military has 450 Bushmaster bolts.

[wildcatter]

looking to build a stainless barreled carbine upper.

Gemme a call Al, maybe we can bump heads some..t