I'm really pondering getting an MRP. I notice that LMT distributors sell the MRP uppers without a bolt assembly. So does that mean you can buy any LMT or other AR bolt and drop it in? What about headspacing?

Please explain.

Thanks.

Quoted: I'm really pondering getting an MRP. I notice that LMT distributors sell the MRP uppers without a bolt assembly. So does that mean you can buy any LMT or other AR bolt and drop it in? What about headspacing? Please explain. Thanks.

With new uppers sans b/bc/ch, while it's not a bad idea to check the headspacing on it using GO/NO-GO headspace guages, for the most part you should be okay.

The headspacing on the AR15/M16 is set when the barrel is afixed to barrel extension, (which is one reason you should never buy a barrel unless it comes with the barrel extension already mounted, unless your a competent gunsmith familar with setting the headspace on these rifles)

FWIW under the INFORMATION button above you can see the parts discussed above.

Mike

usgi bcg, you should have no problems.

I should think it's a good thing we're not required to use LMT "enhanced" bolt, seen enough of them fail, I  stick with the tried and true USGI bolt and carrier

Quoted: usgi bcg, you should have no problems.

+1, that is what I use with both of mine.