NFA item — $0 federal tax stamp. Order, we file the ATF Form 4 on eForms, you pick up at your SOT dealer after approval. Flat $14.99 firearm shipping.
Licensed FFL · Class 2 SOTWe file the Form 4$0 tax stamp
How the Form 4 process works
Transfers on an ATF Form 4 with a $0 federal tax stamp (as of Jan 1, 2026). We file the paperwork on eForms and keep you posted on status; you pick up at your SOT dealer with photo ID after ATF approval. How the Form 4 works →NFA & suppressor guide →
Built to Perform. Designed to Impress. Battle-Tested: Since 2014 the UDP-9 has been deployed to professionals and citizens in over 30 countries Superior Compatibility: Compatible with most AR9 AR15 parts and components allowing for easy upgrades and customization Exceptional Craftsmanship: Precision machined from 7075 billet aluminum for strength and reliability Please note: This is a short barrel rifle variant and requires a tax stamp. Specifications: Action: Straight Blowback Colors: Black hard-coat anodized finish Lower Receiver: 7075-T6 billet aluminum lower receiver with flared magwell integrated trigger guard threaded bolt catch screw and last round bolt hold open Upper Receiver: 7075-T6 billet aluminum slick side upper receiver with appropriately sized ejection port and no forward assist or dust cover Charging handle: Radian Weapons ambidextrous Raptor LT Fire control group: Angstadt Arms EMT-9 Trigger and Radian Weapons Talon ambidextrous safety selector. The UDP-9 is compatible with most aftermarket 9mm PCC triggers. Barrel: 6 chrome moly black melonite barrel with a 1/10 twist and threaded 1/2 28 TPI Muzzle Device: Angstadt Arms A2 style flash suppressor Furniture: B5 Systems Bravo rifle stock and pistol grip Handguard: Angstadt Arms Ultra light 5.5 M-LOK lightening cut handguard with mounting interface on 3 6 9 O clock positions and continuous top mil-spec 1913 picatinny rail Weight: Sub 5lbs Length: 22 Patent pending Accepts all Glock aftermarket magazines. We recommend using factory Glock magazines. Includes one 17 round GLOCK magazine
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
