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what would you need to complete this? And, why is this an advantage?
Dont have to buy a USC to butcher, no sending it off to Tom Bostic to fuse the rear stub on, an average person could assemble it at home with basic tools.

quick look at HKParts- I see about $1750 for all the parts (including 1 magazine) to build this out as an 8" .45ACP SBR, in addition to the receiver for $850. So add another $50 to the receiver for shipping and an FFL transfer, puts the cost of this project at $2650. Add on the $200 NFA stamp, and $50 to fix the barrel, you'd be at $3,000.

The only two USCs that I see for sale, are asking $2,400 and $2750, then by the time you buy a stock, lower, pay Tom to chop and fuse, have someone cut/thread the barrel, file the stamp... you're easily close to $4,000 and most of that work you had to send out for.

Parts to complete:
barrel, barrel pin, cocking handle assembly, USC bolt, firing pin assembly, firing pin spring, extractor, ejector, recoil assembly, lower trigger group, takedown pin, stock, stock hinge pin and however many magazines.
 

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I don't think I would want a rectangular steel bolt carrier that was designed to run in a polymer frame , running in an aluminum frame. Was it toleranced with the right clearance ?

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Awesome explanation!!

Also, where's that 2400 dollar UMP? I want it


Dont have to buy a USC to butcher, no sending it off to Tom Bostic to fuse the rear stub on, an average person could assemble it at home with basic tools.

quick look at HKParts- I see about $1750 for all the parts (including 1 magazine) to build this out as an 8" .45ACP SBR, in addition to the receiver for $850. So add another $50 to the receiver for shipping and an FFL transfer, puts the cost of this project at $2650. Add on the $200 NFA stamp, and $50 to fix the barrel, you'd be at $3,000.

The only two USCs that I see for sale, are asking $2,400 and $2750, then by the time you buy a stock, lower, pay Tom to chop and fuse, have someone cut/thread the barrel, file the stamp... you're easily close to $4,000 and most of that work you had to send out for.

Parts to complete:
barrel, barrel pin, cocking handle assembly, USC bolt, firing pin assembly, firing pin spring, extractor, ejector, recoil assembly, lower trigger group, takedown pin, stock, stock hinge pin and however many magazines.
 

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I Bleed Urban Gray
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3,303 Posts
All that and no spot to hook the stock onto?
 

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There's thread(s) on here somewhere
 
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