F-1 Firearms FDR-15
- Category
- Rifle
- Barrel
- 406 mm
- Weight, empty
- 2.90 kg
- Introduced
- 2019
About
What it is, and why it matters
The F-1 Firearms FDR-15 is the brand's forged, mil-spec entry-tier rifle, bringing F-1's tight tolerances and match-grade barrels to a more affordable price point than the billet skeletonized BDR/UDR lines. It uses a forged 7075-T6511 mil-spec FDR-15 receiver set with a 16-inch match-grade barrel (black-nitride finish, 1:8 twist, .223 Wylde) capable of sub-MOA accuracy, an S7M/C7M free-float M-LOK handguard, a nickel-boron Durabolt bolt carrier group, a forward assist and dust cover, and standard A2 or F-1 compensating muzzle devices. Beyond the standard 5.56/.223 Wylde, the FDR-15 has been offered in .300 Blackout, 7.62x39mm, and .224 Valkyrie, and in distressed Patriot Series finishes. It is now marketed under the Watchtower Firearms umbrella.
The forged FDR-15 was F-1 Firearms' answer to shooters who wanted the brand's name and barrel quality without the premium of a fully machined billet skeletonized receiver, and it became a value standout after F-1 joined the Watchtower Firearms family.
Empty weight roughly 6.4 lb (~2,900 g) depending on barrel and handguard. The FDR-15 is the most affordable F-1 / Watchtower rifle, with street prices frequently $500-$700 for the base 5.56/.223 Wylde model versus a ~$1,200 MSRP. Available with various handguard lengths (S7M 13.7", C7M 12.75") and muzzle devices (A2 flash hider, F-1 Slay-AR / Flat-Face / Angle-Face compensators). Patriot Series adds distressed FDE or grey cerakote finishes.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- F-1 Firearms
- Category
- Rifle
- Country
- United States
- Status
- In production
- Produced
- 2019
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 406 mm
- Overall length
- 889 mm
- Weight, empty
- 2.90 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Gas operated direct impingement
- Firing mechanism
- Hammer fired
- Trigger
- Single stage
- Capacity
- 30
- Magazine
- Detachable box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Forged 7075 t6511 aluminum
- Barrel
- Steel
- Stock
- Polymer
- Finish
- Type iii hard anodized
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 960 m/s
- Effective range
- 500 m
- Maximum range
- 3600 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.
No load solved for this record yetThe flight path is computed from a cartridge and a bullet. This record has no ammunition filed against its chambering, so there is nothing to solve.
Features
What it has
What the record lists as fitted, drawn from the catalogue.
Forged receiver set- Mil spec
Match grade barrel
Black nitride barrel
Free floating handguard
M lok rail
Picatinny rail
Flat top receiver
Threaded barrel
A2 flash hider
Nickel boron bcg
Forward assist
Dust cover- Sub moa capable
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 1,612 rifles | 2.90 kg | 3.50 kg | Lighter than about 80% |
| Overall lengthAmong 1,557 rifles | 889 mm | 1080 mm | Shorter than about 90% |
| Barrel lengthAmong 1,659 rifles | 406 mm | 584 mm | Shorter than about 90% |
| Magazine capacityAmong 1,611 rifles | 30 | 5 | Holds more rounds than about 90% |
Answers
Questions about the F-1 Firearms FDR-15
How much does the F-1 Firearms FDR-15 weigh?
The F-1 Firearms FDR-15 weighs 2.90 kg (6.39 lb) empty.
What caliber is the F-1 Firearms FDR-15?
The F-1 Firearms FDR-15 is chambered in .223 Wylde, .224 Valkyrie, .300 AAC Blackout, 5.56x45mm NATO, and 7.62x39mm.
How many rounds does the F-1 Firearms FDR-15 hold?
The F-1 Firearms FDR-15 holds 30 rounds, fed from a detachable box magazine.
How long is the F-1 Firearms FDR-15?
The F-1 Firearms FDR-15 is 889 mm (35.0 in) long overall, with a 406 mm (16.0 in) barrel.
Who makes the F-1 Firearms FDR-15?
The F-1 Firearms FDR-15 is made by F-1 Firearms (United States). It was designed by F-1 Firearms.
When was the F-1 Firearms FDR-15 introduced?
The F-1 Firearms FDR-15 was introduced in 2019.
How does the F-1 Firearms FDR-15 operate?
The F-1 Firearms FDR-15 uses a gas operated direct impingement 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
76%
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/f1-fdr-15' \ --header 'X-API-Key: your_key'{ "id": "f1-fdr-15", "name": "F-1 Firearms FDR-15", "manufacturer": { "id": "f-1-firearms", "name": "F-1 Firearms", "countryCode": "US", "foundedYear": 2012, "website": "https://f-1firearms.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": "bf8ccea59e1308bdf5721583d2f35b5574ca801977bd648390dd2676177f428c" }, "category": { "id": "rifle", "name": "Rifle", "description": "Long-barreled firearms designed for accurate shooting" }, "country_of_origin": "US", "year_introduced": 2019, "barrel_length_mm": 406, "weight_empty_g": 2900, "action_type": "gas_operated_direct_impingement"}