Aero Precision M4E1 Spartan
- Category
- Carbine
- Barrel
- 406 mm
- Weight, empty
- 2.95 kg
- Introduced
- 2017
About
What it is, and why it matters
The Aero Precision M4E1 Spartan is a value-oriented AR-15-pattern semi-automatic carbine chambered in 5.56x45mm NATO. It pairs Aero's M4E1 enhanced one-piece upper receiver and 15-inch Enhanced M-LOK Gen 2 free-float handguard with a 16-inch chrome-moly-vanadium barrel and mid-length gas system. Offered as a complete rifle with Magpul CTR stock and MOE grip, the Spartan line brings Aero's builder-grade receiver set to a lower price point, typically dressed in a distressed Cerakote finish.
The Spartan configuration is Aero Precision's budget-tier complete-rifle line, distinct from the higher-specification M4E1 and M4E1 Pro complete rifles.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- Aero Precision
- Category
- Carbine
- Country
- United States
- Status
- In production
- Produced
- 2017
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 406 mm
- Overall length
- 895 mm
- Weight, empty
- 2.95 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Gas operated direct impingement
- Firing mechanism
- Hammer fired
- Trigger
- Single action
- Capacity
- 30
- Magazine
- Detachable box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Aluminum
- Barrel
- Steel
- Stock
- Polymer
- Finish
- Cerakote
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 940 m/s
- Muzzle energy
- 1750 J
- Effective range
- 500 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.
M4E1 enhanced one-piece upper receiver
15-inch Enhanced M-LOK Gen 2 free-float handguard
Mid-length gas system
A2 birdcage flash hider
Magpul CTR collapsible stock
Magpul MOE grip
Spartan Worn Cerakote finish
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 141 5.56x45mm NATO carbines | 2.95 kg | 2.95 kg | Near the median |
| Overall lengthAmong 144 5.56x45mm NATO carbines | 895 mm | 838 mm | Longer than about 70% |
| Barrel lengthAmong 150 5.56x45mm NATO carbines | 406 mm | 406 mm | Longer than about 70% |
| Magazine capacityAmong 150 5.56x45mm NATO carbines | 30 | 30 | Near the median |
Answers
Questions about the Aero Precision M4E1 Spartan
How much does the Aero Precision M4E1 Spartan weigh?
The Aero Precision M4E1 Spartan weighs 2.95 kg (6.51 lb) empty.
What caliber is the Aero Precision M4E1 Spartan?
The Aero Precision M4E1 Spartan is chambered in 5.56x45mm NATO.
How many rounds does the Aero Precision M4E1 Spartan hold?
The Aero Precision M4E1 Spartan holds 30 rounds, fed from a detachable box magazine.
How long is the Aero Precision M4E1 Spartan?
The Aero Precision M4E1 Spartan is 895 mm (35.2 in) long overall, with a 406 mm (16.0 in) barrel.
Who makes the Aero Precision M4E1 Spartan?
The Aero Precision M4E1 Spartan is made by Aero Precision (United States). It was designed by Aero Precision.
When was the Aero Precision M4E1 Spartan introduced?
The Aero Precision M4E1 Spartan was introduced in 2017.
How does the Aero Precision M4E1 Spartan operate?
The Aero Precision M4E1 Spartan 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.
In service
Provenance
Confidence in this record
70%
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/aero-precision-m4e1-spartan' \ --header 'X-API-Key: your_key'{ "id": "aero-precision-m4e1-spartan", "name": "Aero Precision M4E1 Spartan", "manufacturer": { "id": "aero-precision", "name": "Aero Precision", "countryCode": "US", "foundedYear": 1994, "website": "https://www.aeroprecisionusa.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 03:43:38", "version": "a73983bdb6e8fdf2660fe8212be79b61cfa9189d0c69a22bce1f4fa5fa977a56" }, "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": 2953, "action_type": "gas_operated_direct_impingement"}