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eric90503
04-08-2012, 9:54 PM
Frankly quite annoyed at Bushmasters tech support. Talked to someone on Friday about whether a Milspec tube would fit in my pre-ban Bushmaster.
The tech support guy just told me unenthusiastically ......"yeah". Yeah it will fit? "Yeah, it'll screw in"...

I'm no tech but, what I do know is physics is physics. Been trying to find a solution now for a few weeks now. I really like VLTORS A5 and B5's SOPMOD stock, but I don't think they'll fit. Any of you pre-ban Bushmaster owners come up with viable solutions? Thanks in advance!

akjunkie
04-08-2012, 10:07 PM
Commercial or Mil spec. The threads into the receiver is the same.

i<3HK
04-08-2012, 10:17 PM
Commercial or Mil spec. The threads into the receiver is the same.

:iagree:

eric90503
04-08-2012, 10:36 PM
Thanks guys, but this diagram gives me doubts?...

http://www.ar15.com/mobile/topic.html?b=2&f=385&t=195533


I'll have to give it a try. Trying to decide on VLTOR A5 or LMT SOPMOD,
decisions, decisions...

busta00
04-09-2012, 12:31 PM
Maybe try calling Vltors or sopmod. I think its harder for bushmaster techs to know if aftermarket stuff would fit their gun

roushstage2
04-09-2012, 12:45 PM
I thought there was a way to tell by the threads, like, how they were cut. By the diagram, it looks like the commercial tube is threaded all the way back as well?

Sniper3142
04-09-2012, 4:08 PM
Commercial or Mil spec. The threads into the receiver is the same.

You've already received the correct answer ^

Chaos47
04-09-2012, 5:14 PM
Millspec and Commercial differ in the way they are made and the way the threads are cut. Both have the same thread size and pitch.

http://i655.photobucket.com/albums/uu272/Wiringguy/milspecthread-1.png

Commercial also has a different end but that doesn't really pertain to your question.

Get a milspec tube assembly and a milspec stock and you will be fine.

BTW Vltor makes a stock that will fit your rifle buffer (it actually fits both rifle and carbine tube)
http://www.vltorstore.com/clearance-arm-rifle-stocks/

CHS
04-09-2012, 7:26 PM
Commercial or Mil spec. The threads into the receiver is the same.

^This. This. This.

Commercial vs. Milspec has everything to do with the stocks and tubes and NOTHING to do with the actual receiver.