CMMG Resolute Mk9
- Category
- Carbine
- Barrel
- 409 mm
- Weight, empty
- 2.90 kg
- Introduced
- 2018
About
What it is, and why it matters
The CMMG Resolute Mk9 is a carbine-length AR-15 pattern semi-automatic pistol-caliber carbine chambered in 9x19mm Parabellum. Built on CMMG's dedicated Mk9 magwell that accepts widely available Colt-style 9mm SMG magazines, the Resolute Mk9 pairs a 16.1-inch barrel with CMMG's patented Radial Delayed Blowback operating system, which delays the bolt's rearward travel to substantially reduce felt recoil compared with the traditional straight-blowback pistol-caliber AR designs. The rifle ships with CMMG's ZEROED enhanced components including an ambidextrous charging handle and safety selector, a drop-in single-stage trigger, and the ZEROED muzzle brake. A 7075-T6 aluminum upper and lower receiver carry a Cerakote finish offered in numerous colors, and the M-LOK free-float handguard provides multiple mounting positions. A last-round bolt-hold-open feature and RipStock collapsible buttstock round out the package.
CMMG introduced its Radial Delayed Blowback system to bring the recoil-taming benefits of a delayed action to the pistol-caliber AR market, and applied it across the Mk9 (Colt-mag) and MkGs (Glock-mag) 9mm platforms manufactured in Boonville, Missouri.
MSRP approximately $1,449. The Mk9 designation denotes CMMG's dedicated 9mm platform using Colt SMG-style magazines, distinct from the MkG/MkGs platform that feeds from Glock-pattern magazines. The Resolute Mk9 sits in CMMG's carbine-length Resolute family alongside the 5.56mm Mk4, 7.62x39mm Mk47, and 5.7x28mm Mk57. Overall length is approximately 32.5 inches with the stock collapsed-to-extended range; weight is roughly 6.4 lb (2903 g).
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- CMMG Inc.
- Category
- Carbine
- Country
- United States
- Status
- In production
- Produced
- 2018
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 409 mm
- Overall length
- 826 mm
- Weight, empty
- 2.90 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Blowback
- Firing mechanism
- Hammer fired
- Trigger
- Single stage
- Trigger pull
- 31.0 N
- Capacity
- 32
- 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
- Cerakote
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 430 m/s
- Muzzle energy
- 690 J
- Effective range
- 100 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.
M lok handguard
Free floating handguard
Ambidextrous controls
Ar15 pattern
Picatinny rail
Threaded barrel
Collapsible stock
Single stage trigger
Muzzle brake
Last round bolt hold open
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 | 2.90 kg | 2.78 kg | Heavier than about 70% |
| Overall lengthAmong 56 9x19mm Parabellum carbines | 826 mm | 820 mm | Near the median |
| Barrel lengthAmong 64 9x19mm Parabellum carbines | 409 mm | 406 mm | Longer than about 70% |
| Magazine capacityAmong 64 9x19mm Parabellum carbines | 32 | 24 | Holds more rounds than about 80% |
Answers
Questions about the CMMG Resolute Mk9
How much does the CMMG Resolute Mk9 weigh?
The CMMG Resolute Mk9 weighs 2.90 kg (6.40 lb) empty.
What caliber is the CMMG Resolute Mk9?
The CMMG Resolute Mk9 is chambered in 9x19mm Parabellum.
How many rounds does the CMMG Resolute Mk9 hold?
The CMMG Resolute Mk9 holds 32 rounds, fed from a detachable box magazine.
How long is the CMMG Resolute Mk9?
The CMMG Resolute Mk9 is 826 mm (32.5 in) long overall, with a 409 mm (16.1 in) barrel.
Who makes the CMMG Resolute Mk9?
The CMMG Resolute Mk9 is made by CMMG Inc. (United States).
When was the CMMG Resolute Mk9 introduced?
The CMMG Resolute Mk9 was introduced in 2018.
How does the CMMG Resolute Mk9 operate?
The CMMG Resolute Mk9 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
78%
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/cmmg-resolute-mk9' \ --header 'X-API-Key: your_key'{ "id": "cmmg-resolute-mk9", "name": "CMMG Resolute Mk9", "manufacturer": { "id": "cmmg", "name": "CMMG Inc.", "countryCode": "US", "foundedYear": 2002, "website": "https://cmmg.com", "logoUrl": null, "description": null, "status": null, "defunctYear": null, "stateOwned": null, "makesFirearms": null, "parentId": null, "predecessorId": null, "createdAt": "2026-02-11 23:44:38", "updatedAt": "2026-02-18 03:43:43", "version": "a7e68de40df3e6e52ce7309f32c551e46f69ca644a4955a2de5291d2bfbf7a0b" }, "category": { "id": "carbine", "name": "Carbine", "description": "Shortened rifles for close-quarters use" }, "country_of_origin": "US", "year_introduced": 2018, "barrel_length_mm": 409, "weight_empty_g": 2903, "action_type": "blowback"}