JP Enterprises JP-5
- Category
- Personal Defense Weapon
- Barrel
- 368 mm
- Weight, empty
- 2.77 kg
- Introduced
- 2021
About
What it is, and why it matters
The JP Enterprises JP-5 is a high-end 9x19mm roller-delayed blowback pistol-caliber carbine that marries the ergonomics of the AR-15 with the soft-shooting roller-delayed operating system popularized by the H&K MP5. Released in 2021 after roughly two years of development, it uses MP5-pattern locking pieces with selectable roller-shoulder angles (80/90/100/110 degrees) to tune the action, feeds from Glock-pattern magazines, and accepts standard AR-15 fire-control groups, buffer tubes, stocks, and grips. Built on a billet-aluminum G940 receiver set with a JP Supermatch barrel (typically 14.5 inches pinned and welded to 16) and a JP Silent Captured Spring, the JP-5 is marketed to the high-end competition PCC market and is praised by reviewers for its exceptionally flat, soft recoil impulse.
JP Enterprises built its name on ultra-tuned competition AR-15s, and the JP-5 is its love letter to the MP5 - explicitly marketed as marrying Stoner's AR ergonomics with the roller-delayed system. Reviewers consistently say it 'shoots like a .223, not a 9mm.'
MSRP roughly $3,199-$3,349 depending on configuration. Ships primarily with a 14.5-inch JP Supermatch barrel pinned/welded to a legal 16 inches with a pinned compensator; a 16-inch barrel option also exists. Uses a standard AR-15 buffer tube and stock, so it does not fold. Glock-magazine-fed only (the older JP GMR-15 uses Colt/SMG-pattern mags). The exact aluminum alloy and muzzle velocity were not published.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- JP Enterprises
- Category
- Personal Defense Weapon
- Country
- United States
- Status
- In production
- Produced
- 2021
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 368 mm
- Overall length
- 800 mm
- Weight, empty
- 2.77 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Roller delayed blowback
- Firing mechanism
- Hammer fired
- Trigger
- Single stage
- Capacity
- 17
- Magazine
- Detachable box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Aluminum
- Barrel
- Stainless steel
- Stock
- Polymer
- Finish
- Matte black
BallisticsFrom the service cartridge, not a handload.
- 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.
- Roller delayed operating system
Ar15 ergonomics and controls
Glock magazine compatible
Ambidextrous controls
Last round bolt hold open
Selectable locking piece angles
Jp supermatch barrel
Jp mk3 mlok handguard
Jp silent captured spring
Flared magwell
Pinned welded compensator
Picatinny optics rail
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 54 personal defense weapons | 2.77 kg | 2.23 kg | Heavier than about 80% |
| Overall lengthAmong 53 personal defense weapons | 800 mm | 582 mm | Longer than about 90% |
| Barrel lengthAmong 55 personal defense weapons | 368 mm | 168 mm | Among the longest tenth |
| Magazine capacityAmong 25 9x19mm Parabellum personal defense weapons | 17 | 20 | Holds fewer rounds than about 70% |
Answers
Questions about the JP Enterprises JP-5
How much does the JP Enterprises JP-5 weigh?
The JP Enterprises JP-5 weighs 2.77 kg (6.10 lb) empty.
What caliber is the JP Enterprises JP-5?
The JP Enterprises JP-5 is chambered in 9x19mm Parabellum.
How many rounds does the JP Enterprises JP-5 hold?
The JP Enterprises JP-5 holds 17 rounds, fed from a detachable box magazine.
How long is the JP Enterprises JP-5?
The JP Enterprises JP-5 is 800 mm (31.5 in) long overall, with a 368 mm (14.5 in) barrel.
Who makes the JP Enterprises JP-5?
The JP Enterprises JP-5 is made by JP Enterprises (United States). It was designed by John Paul.
When was the JP Enterprises JP-5 introduced?
The JP Enterprises JP-5 was introduced in 2021.
How does the JP Enterprises JP-5 operate?
The JP Enterprises JP-5 uses a roller delayed 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
80%
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/jp-5' \ --header 'X-API-Key: your_key'{ "id": "jp-5", "name": "JP Enterprises JP-5", "manufacturer": { "id": "jp-enterprises", "name": "JP Enterprises", "countryCode": "US", "foundedYear": 1991, "website": "https://www.jprifles.com", "logoUrl": null, "description": null, "status": "active", "defunctYear": null, "stateOwned": null, "makesFirearms": true, "parentId": null, "predecessorId": null, "createdAt": "2026-04-05 22:24:37", "updatedAt": "2026-04-05 22:24:37", "version": "6d3115ba9c18aa58c5b8b7525493b5b625ddbe945c3229d44662a8b421887a9f" }, "category": { "id": "personal-defense-weapon", "name": "Personal Defense Weapon", "description": "Compact firearms designed for non-frontline military personnel" }, "country_of_origin": "US", "year_introduced": 2021, "barrel_length_mm": 368, "weight_empty_g": 2767, "action_type": "roller_delayed_blowback"}