Pistol 450 Bushmaster uppers ?

Talk about the AR15 style rifles chambered in 450 Bushmaster.

Moderator: MudBug

Pistol 450 Bushmaster uppers ?

Postby jcdflint » Tue Jan 24, 2017 5:40 am

I'm looking for a AR Bushmaster Pistol upper ( I'd like 10.5 inch) Any info on place too buy would be great :) Thanks ..Jeff
jcdflint
 
Posts: 3
Joined: Fri Jan 06, 2017 6:00 am

Re: Pistol 450 Bushmaster uppers ?

Postby Bmt85 » Tue Jan 24, 2017 8:16 am

Only one I can think of off hand is Franklin Aromory, but there 450 supply has been lacking for quite a while. Other than that, it's build one yourself. It's not that hard, does require some tools though.
Bmt85
 
Posts: 191
Joined: Wed May 18, 2016 11:13 am
Location: S.E. Michigan

Re: Pistol 450 Bushmaster uppers ?

Postby plant_one » Tue Jan 24, 2017 10:32 am

ya i think franklin is the only one doing a production one right now.

they have two barrel lengths - a 7.5 and i think a 12.5.

when i spoke with them, i was told the 7.5" was a "because we could" project but there was significant velocity loss when you got much below 12. at 7.5" the 450 bushmaster was essentially neutered from what it is due to the MV Numbers.


he didnt give me any specs of what they were seeing at the 7.5" size, but i'm sure if ya give them a call once they get settled back in from shot show that they would probably be willing to share that kind of info too.

im sure if you want one at 10.5" they could easily chop one of their 12.5" barrels down for you and rethread it, IIRC cut/thread with them was right around $100.
User avatar
plant_one
 
Posts: 438
Joined: Sat Mar 19, 2016 8:58 pm
Location: Oakland County, MI

Re: Pistol 450 Bushmaster uppers ?

Postby Bmt85 » Tue Jan 24, 2017 1:40 pm

They do 7.5" and 11.5" barrels. As far as uppers they offer, I've only seen the 11.5" used. Also wouldn't recommend having work done to melonite barrels. The treatment (melonite) hardens the exposed metal, and adds corrosion resistance. Cutting into it could screw with the hardness of the metal that is left after cutting, and will most likely remove any corrosion resistance as well. If you have to have a 10.5", custom order a BHW, or look into a stainless barrel with a carbine length gas system, and have it cut down. Or maybe go with a pistol length gas system because of dwell time, not sure exactly. You will probably have to play with the gas port size on the barrel, but that's easy enough.
Bmt85
 
Posts: 191
Joined: Wed May 18, 2016 11:13 am
Location: S.E. Michigan

Re: Pistol 450 Bushmaster uppers ?

Postby TonyRumore » Wed Jan 25, 2017 5:14 pm

We're going to run off a batch of 10.5" barrels in the next couple of weeks.

Tony Rumore
Tromix
TonyRumore
 
Posts: 74
Joined: Tue Dec 16, 2014 1:02 pm

Re: Pistol 450 Bushmaster uppers ?

Postby Bmt85 » Wed Jan 25, 2017 7:43 pm

Awesome. Mind if I ask if anything is going to be different with the 10.5" barrels? What I mean is twist rate or barrel profile.
Bmt85
 
Posts: 191
Joined: Wed May 18, 2016 11:13 am
Location: S.E. Michigan

Re: Pistol 450 Bushmaster uppers ?

Postby TonyRumore » Thu Jan 26, 2017 3:57 pm

Our 18" barrels are a light weight profile with a .750" gas block.

The 10.5's will be mid-weight barrels using .875" gas blocks. I prefer a bit heavier barrel profile if there is going to be a suppressor hanging off the end of it, and it also gives the can a larger shoulder to square up against.

Tony Rumore
Tromix
TonyRumore
 
Posts: 74
Joined: Tue Dec 16, 2014 1:02 pm


Return to AR15 Style Rifles

Who is online

Users browsing this forum: Bing [Bot] and 4 guests