F-1 Firearms UDR-15
F-1 Firearms · Rifle · In Production · 2018
Also known as: UDR-15, UDR-15-3G, F1 UDR-15 Ultralight
Overview
The F-1 Firearms UDR-15 is the company's ultralight skeletonized AR-15, designed for fast handling and rapid movement while retaining tack-driving sub-MOA accuracy. It uses the UDR Style-2 skeletonized universal receiver set machined from 7075-T6 aircraft-quality aluminum with a scalloped MIL-SPEC 1913 Picatinny rail, paired with F-1's lightweight skeletonized H7M handguard and a skeletonized lightweight foregrip to minimize forward weight. The standard build wears a 16-inch light-contour match-grade barrel (1:8 twist, .223 Wylde) on a mid-length gas system with a low-profile gas block, an F-1 Dragon/Angle-Face compensator, and a nickel-boron bolt carrier group. The UDR receiver set differs from the BDR family, using F-1's universal upper design.
Specifications
| Weight (empty) | 2722 g (96.0 oz) |
| Overall Length | 902 mm (35.51") |
| Barrel Length | 406 mm (15.98") |
| Action Type | Gas Operated Direct Impingement |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Two Stage |
| Magazine Capacity | 30 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 960 m/s (3150 fps) |
| Effective Range | 500 m (547 yd) |
| Maximum Range | 3600 m (3937 yd) |
| Barrel Rifling | Right Hand |
| Rifling Twist | 203 mm (7.99") |
| Frame Material | Billet 7075 T6 Aluminum |
| Barrel Material | Stainless Steel |
| Stock Material | Polymer |
| Finish | Type Iii Class 2 Hard Anodized |
Calibers
- .223 Wylde · primary · 5.56x45mm NATO — also known as 223 Wylde, .223 Rem, 5.56 NATO, 5.56x45mm
- 5.56x45mm NATO · 5.56x45mm NATO — also known as 5.56 NATO, 5.56x45mm, .223 Rem
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Manual Safety Selector
- Features: Skeletonized Billet Receiver Set, Ultralight Construction, Light Contour Barrel, Match Grade Barrel, Mid Length Gas System, Low Profile Gas Block, Free Floating Handguard, Skeletonized Handguard, Skeletonized Foregrip, M Lok Rail, Picatinny Rail, Scalloped Rail, Flat Top Receiver, 60 Degree Beveled Magwell, Threaded Barrel, Compensating Muzzle Brake, Nickel Boron Bcg, Sub Moa Capable
Variants
- F-1 Firearms UDR-15-3G — Three Gun Configuration
- F-1 Firearms UDR-15 Style 2 — Receiver Pattern
Production
Production years: 2018-present
Origin
Country of origin: United States
Designer: F-1 Firearms
Notes
Empty weight roughly 6.0 lb (~2,722 g) thanks to extensive skeletonization and a light-contour barrel; exact weight varies by configuration. 1:8 twist stabilizes bullets up to ~80 gr. .223 Wylde chamber fires both .223 Rem and 5.56 NATO. The UDR-15-3G is the 3-gun-oriented complete-rifle configuration. MSRP for complete rifles roughly $1,500-$2,000 depending on finish.
Background
The UDR (Ultralight) line let F-1 chase minimum weight without abandoning its trademark machined skeletonization, carving the receiver, handguard and even the foregrip down to a competition-ready featherweight.