Angstadt Arms UDP-9 Rifle
- Category
- Carbine
- Barrel
- 406 mm
- Weight, empty
- 2.72 kg
- Introduced
- 2017
About
What it is, and why it matters
The Angstadt Arms UDP-9 Rifle is the 16-inch barrel, rifle-length configuration of the UDP-9 AR-9 platform, chambered in 9x19mm and feeding from GLOCK-pattern double-stack magazines. The longer 16-inch chrome moly Melonite barrel makes it a non-NFA rifle requiring no tax stamp while wringing higher velocity from 9mm than the short pistol. It retains the UDP-9's 7075-T6 billet aluminum upper and lower receivers, straight blowback action, last-round bolt hold open, Angstadt Arms EMT-9 single-stage trigger, Radian Weapons Talon ambidextrous safety and Raptor LT charging handle. The rifle wears a B5 Systems Bravo collapsible stock and a longer free-floating M-LOK handguard, and is finished in black anodize, Magpul FDE or Tactical Grey Cerakote.
The 16-inch UDP-9 Rifle gave buyers a no-stamp path into the Angstadt AR-9 ecosystem and is popular as a soft-shooting pistol-caliber carbine for competition and home defense.
16-inch barrel keeps the rifle non-NFA. Approximately 6 lbs unloaded. Shares the GLOCK-magazine lower and EMT-9 fire control with the UDP-9 pistol.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- Angstadt Arms
- Category
- Carbine
- Country
- United States
- Status
- In production
- Produced
- 2017
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 406 mm
- Overall length
- 838 mm
- Height
- 200 mm
- Width
- 64 mm
- Weight, empty
- 2.72 kg
- Weight, loaded
- 2.99 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Blowback
- Firing mechanism
- Hammer fired
- Trigger
- Single stage
- Trigger pull
- 22.0 N
- Capacity
- 17
- Magazine
- Detachable box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Aluminum alloy
- Barrel
- Steel
- Stock
- Polymer
- Finish
- Anodized
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 420 m/s
- Muzzle energy
- 657 J
- Effective range
- 100 m
- Maximum range
- 1800 m
Trajectory
What the round does downrange
Solved from the muzzle figures and the bullet. The dashed rule is the effective range on the record, and the crosses are the steps the solver returned.
Features
What it has
What the record lists as fitted, drawn from the catalogue.
Ar15 pattern- Glock compatible
Last round bolt hold open
Ambidextrous controls
Ambidextrous charging handle
M lok handguard
Free floating handguard
Threaded barrel
Flared mag well
Picatinny rail
Billet receivers
Collapsible stock
Standing
How it compares
Each figure against the firearms of the same type and cartridge that record it, or of the same type where that cartridge has too few. Positions are read to the nearest tenth.
| Measurement | This firearm | Median | Position |
|---|---|---|---|
| Empty weightAmong 62 9x19mm Parabellum carbines | 2.72 kg | 2.78 kg | Lighter than about 60% |
| Overall lengthAmong 56 9x19mm Parabellum carbines | 838 mm | 820 mm | Longer than about 60% |
| Barrel lengthAmong 64 9x19mm Parabellum carbines | 406 mm | 406 mm | Near the median |
| Magazine capacityAmong 64 9x19mm Parabellum carbines | 17 | 24 | Holds fewer rounds than about 70% |
Answers
Questions about the Angstadt Arms UDP-9 Rifle
How much does the Angstadt Arms UDP-9 Rifle weigh?
The Angstadt Arms UDP-9 Rifle weighs 2.72 kg (6.00 lb) empty and 2.99 kg (6.60 lb) loaded.
What caliber is the Angstadt Arms UDP-9 Rifle?
The Angstadt Arms UDP-9 Rifle is chambered in 9x19mm Parabellum.
How many rounds does the Angstadt Arms UDP-9 Rifle hold?
The Angstadt Arms UDP-9 Rifle holds 17 rounds, fed from a detachable box magazine.
How long is the Angstadt Arms UDP-9 Rifle?
The Angstadt Arms UDP-9 Rifle is 838 mm (33.0 in) long overall, with a 406 mm (16.0 in) barrel.
Who makes the Angstadt Arms UDP-9 Rifle?
The Angstadt Arms UDP-9 Rifle is made by Angstadt Arms (United States). It was designed by Angstadt Arms.
When was the Angstadt Arms UDP-9 Rifle introduced?
The Angstadt Arms UDP-9 Rifle was introduced in 2017.
How does the Angstadt Arms UDP-9 Rifle operate?
The Angstadt Arms UDP-9 Rifle uses a blowback action, and its firing mechanism is hammer fired.
Compatibility
Which parts fit this firearm
Studio
Every part that mounts on this, resolved
Not a list the maker typed out: the answer comes from the mounts this firearm exposes and the interface each part needs, so it stays right when either one changes.
- Every part that mounts on any firearm in the catalogue
- Interface standards, platforms and fit overrides
- The same answers through the API and the MCP server
Requires a signed-in GunSpec account on the Studio plan. The answer is computed per part, so it is not part of the public record.
Provenance
What the record holds
Every figure above was taken from one of these pages. The confidence reflects how much of the record came from a page a claim can be checked against.
Provenance
Confidence in this record
72%
Stockists
Where to buy
Offers link straight to the shop. GunSpec never takes the order.
No shop has listed this firearm yet
Stock and prices come from the shops themselves. If you sell this firearm, you can list it and it appears here.
List a firearmMCP
Ask an assistant about it
The same record, reached the way a person asks for it rather than the way a program does.
Ask GunSpec
Works with
Point an MCP client at GunSpec and it answers from the catalogue rather than from memory. A free key covers the read tools.
API
The call that returns this record
The same fields, in the same units, from the same endpoint the page reads.
curl --request GET \ --url 'https://api.gunspec.io/v1/firearms/angstadt-udp-9-rifle' \ --header 'X-API-Key: your_key'{ "id": "angstadt-udp-9-rifle", "name": "Angstadt Arms UDP-9 Rifle", "manufacturer": { "id": "angstadt-arms", "name": "Angstadt Arms", "countryCode": "US", "foundedYear": 2014, "website": "https://angstadtarms.com", "logoUrl": null, "description": null, "status": null, "defunctYear": null, "stateOwned": null, "makesFirearms": null, "parentId": null, "predecessorId": null, "createdAt": "2026-05-26 23:17:02", "updatedAt": "2026-05-26 23:17:02", "version": "97716f130096d028e6c8d9d172b4553f69399d91abca2f2160cdfbb9ed19e355" }, "category": { "id": "carbine", "name": "Carbine", "description": "Shortened rifles for close-quarters use" }, "country_of_origin": "US", "year_introduced": 2017, "barrel_length_mm": 406, "weight_empty_g": 2722, "action_type": "blowback"}