Knight's Armament M110K5
- Category
- Sniper Rifle
- Barrel
- 368 mm
- Weight, empty
- 3.86 kg
- Introduced
- 2020
About
What it is, and why it matters
The Knight's Armament M110K5 is a suppressor-optimized 7.62mm NATO semi-automatic carbine representing the latest evolution of the legendary M110/SR-25 platform. Designed to significantly reduce the length and weight normally associated with suppressed 7.62mm platforms, the M110K5 features a 14.5-inch cold hammer-forged, chrome-lined barrel made from 32CrMoV12-10 steel with a hybrid light profile. The rifle is purpose-built to cover the full spectrum of precision engagement from close quarters to 800 meters, whether suppressed or unsuppressed. The high-pressure dual ejector bolt is specifically engineered to enhance performance in both firing conditions while extending the rifle's service life. The M110K5 is compatible with KAC's Quick Detach Coupling (QDC) 7.62mm signature reduction devices as well as direct-thread semi-permanent suppressor options, and uses M-LOK handguard attachment for a streamlined accessory interface.
The M110K5 continues the legacy of the SR-25 platform that Eugene Stoner designed in the early 1990s, but optimized for the reality that modern special operations forces fight suppressed as a default, not an exception. Where the original M110 SASS was a 20-inch barreled precision rifle with a suppressor added as an accessory, the K5 was designed from the ground up around the suppressor as an integral part of the weapon system.
The M110K5 represents KAC's response to the modern military requirement for compact, suppressed precision rifles that can operate in both CQB and designated marksman roles. The commercial variant is designated the SR-25 K5. The M110K1 variant, ordered by NSWC Crane for USSOCOM in 2019, converts existing M110s to 6.5mm Creedmoor with 14.5-inch and 22-inch barreled configurations. The 32CrMoV12-10 barrel steel is a European specification alloy chosen for superior heat resistance and barrel life compared to standard 4150 chrome-moly steel. The B5 Systems collapsible precision buttstock provides a compact package without sacrificing cheek weld consistency.
Specification
Everything measured
IdentityWhat it is, who built it and when.
- Manufacturer
- Knight's Armament Company
- Category
- Sniper Rifle
- Country
- United States
- Status
- In production
- Produced
- 2020
- Variant of
- Suppressor optimized carbine
DimensionsAs issued, without a magazine or an optic.
- Barrel
- 368 mm
- Overall length
- 889 mm
- Weight, empty
- 3.86 kg
- Weight, loaded
- 4.50 kg
ActionHow it cycles, what trips it, and what feeds it.
- Action
- Gas operated direct impingement
- Firing mechanism
- Rotating bolt
- Trigger
- Two stage
- Capacity
- 20
- Magazine
- Detachable box
MaterialsEach swatch is the material itself, not a colour chosen to stand for it.
- Frame
- Aluminum alloy
- Barrel
- Cold hammer forged chrome lined steel
- Stock
- Polymer
- Finish
- Matte black
BallisticsFrom the service cartridge, not a handload.
- Muzzle velocity
- 715 m/s
- Muzzle energy
- 2900 J
- Effective range
- 800 m
- Maximum range
- 3700 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.
Free floating barrel
Cold hammer forged barrel
Chrome lined barrel
Suppressor optimized
Dual ejector bolt
M-lok handguard
Collapsible precision stock
Ambidextrous controls
Qdc suppressor mount- Direct thread suppressor option
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 80 7.62x51mm NATO sniper rifles | 3.86 kg | 5.04 kg | Lighter than about 90% |
| Overall lengthAmong 80 7.62x51mm NATO sniper rifles | 889 mm | 1116 mm | Shorter than about 90% |
| Barrel lengthAmong 80 7.62x51mm NATO sniper rifles | 368 mm | 559 mm | Among the shortest tenth |
| Magazine capacityAmong 80 7.62x51mm NATO sniper rifles | 20 | 15 | Holds more rounds than about 80% |
Its place in the rankings
Answers
Questions about the Knight's Armament M110K5
How much does the Knight's Armament M110K5 weigh?
The Knight's Armament M110K5 weighs 3.86 kg (8.51 lb) empty and 4.50 kg (9.92 lb) loaded.
What caliber is the Knight's Armament M110K5?
The Knight's Armament M110K5 is chambered in 7.62x51mm NATO.
How many rounds does the Knight's Armament M110K5 hold?
The Knight's Armament M110K5 holds 20 rounds, fed from a detachable box magazine.
How long is the Knight's Armament M110K5?
The Knight's Armament M110K5 is 889 mm (35.0 in) long overall, with a 368 mm (14.5 in) barrel.
Who makes the Knight's Armament M110K5?
The Knight's Armament M110K5 is made by Knight's Armament Company (United States). It was designed by C. Reed Knight Jr..
When was the Knight's Armament M110K5 introduced?
The Knight's Armament M110K5 was introduced in 2020.
How does the Knight's Armament M110K5 operate?
The Knight's Armament M110K5 uses a gas operated direct impingement action, and its firing mechanism is rotating bolt.
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
- US Special Operations Command
- United States
Provenance
Confidence in this record
65%
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/m110k5' \ --header 'X-API-Key: your_key'{ "id": "m110k5", "name": "Knight's Armament M110K5", "manufacturer": { "id": "knights-armament", "name": "Knight's Armament Company", "countryCode": "US", "foundedYear": 1982, "website": "https://www.knightarmco.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 03:40:45", "version": "0b3c3f0a0149c800488fc669f0c106012c0171e0595be976331646ae4580d317" }, "category": { "id": "sniper-rifle", "name": "Sniper Rifle", "description": "Precision rifles optimized for long-range accuracy" }, "country_of_origin": "US", "year_introduced": 2020, "barrel_length_mm": 368, "weight_empty_g": 3860, "action_type": "gas_operated_direct_impingement"}