Federal Law1Add my vote for this tag HK Family1Add my vote for this tag create new tag
view all tags
Share this page
Twitter Delicious Digg Facebook Google Bookmarks Reddit StumbleUpon

922(r) Worksheet for HK UMP / USC builds

See also: Sporting vs Non-Sporting Firearms

DRAFT STATUS ONLY!!! Do not rely upon this page yet, it has NOT been vetted and it is NOT authoritative. Gunwiki.net does not yet have an ATF letter on the parts count for the USC (although we hope to obtain a copy today)!

The United States has a lovely bit of import law, Title 18 USC 922(r), which prevents most of the more interesting rifle designs from being directly imported into the US. The import regulations are commonly referred to as "922(r)" in gun circles.

In order to legally build a non-sporting rifle out of a parts kit (or modify a 'sporting' rifle to include 'non-sporting' features), no more than 10 imported parts may remain in the final product. This is generally done by replacing foreign-made parts with domestically-built parts.

It's worth knowing that the USC has 14 ATF-counted parts - 6 do not apply to the USC-series rifles. So, for folks who insist on only half-understanding 922(r), the USC needs 4 US-made parts to be compliant.

Although the USC does have what we would call a bolt, ATF does not consider it to be one because it's one part with the bolt carrier.

N/A Barrel extensions
Mounting block (front trunion)
N/A Muzzle attachment
N/A Bolt
Bolt carrier
Operating rods (cocking handle)
N/A Gas piston
Trigger housing
N/A Disconnector
Pistol grip
N/A Forearm, handguard
Magazine body


-- SeanNewton - 27 Jan 2012

Edit | Attach | Watch | Print version | History: r2 < r1 | Backlinks | Raw View | Raw edit | More topic actions
Topic revision: r2 - 27 Jan 2012 - SeanNewton
Would this information help out someone you know? Click here to share it! Twitter Delicious Digg Facebook Google Bookmarks LinkedIn Reddit StumbleUpon

This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2024 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback