The Angstadt Arms UDP-9 SBR, 9mm, 6-Inch, 17-Round (brand part no. AAUDP09S06) is a 9mm short-barrel rifle built around a 6-inch barrel. It runs a semi-auto action and feeds from a 17-round magazine, giving shooters a compact platform for close-quarters use. Angstadt Arms builds it as a complete, transferable short-barrel rifle.

Key Specifications

• Chambered in 9mm.
• Wears a 6-inch barrel, the defining feature of this short-barrel rifle.
• Feeds from a 17-round magazine.
• Operates as a Semi-Auto platform for reliable cycling.
• Equipped with a Manual Safety for controlled operation.

Frequently Asked Questions

Is this an NFA item? Yes. As a short-barrel rifle, it's a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

What caliber does it fire? 9mm.

How many rounds does the included magazine hold? 17 rounds.

Buy the Angstadt Arms UDP-9 SBR, 9mm, 6-Inch, 17-Round

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax, and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through Angstadt Arms‘s short-barrel rifles lineup and our Lubbock, Texas team will walk you through the transfer process.