Outfitters Score™
Excellent
Knights Armament scores as a top-tier build with premium pricing and most components included.
Our proprietary rating combines brand tier, price percentile within the caliber, feature completeness, barrel versatility, retailer availability, caliber practicality, and use-case fit.
Short Barrel: Verify Classification
This firearm has a barrel under 16 inches. It may be classified as an AR Pistol (with brace) or an SBR (with stock, NFA regulated). Check with the retailer to confirm classification before purchasing.
Description
KNIGHT'S ARMAMENT SR-15 KS-3 5.56 NATO SEMI-AUTO RIFLE The KS-3 features a standard profile 11.5" cold hammer forged barrel, with an optimal length for those that need a small rifle-caliber carbine. It is easy to stow for transport, unobtrusive to carry, and highly efficient in use. With nearly 100% compatibility with the other KS rifles, it is the recommended choice for a secondary upper receiver for those with KS-1 or KS-2 rifles, or as a primary system for those that require a dependable, small, light carbine. SPECS Barrel: 11.5", cold hammer forged, 1:7" twist, chrome lined Cartridge: 5.56 NATO Weight: 6.1 lbs Mfg: Knights Armament
Features
M Lok|Cold Hammer Forged
Full Specifications
Overview
| Brand | Knights Armament |
| Model | 121441 |
| SKU | 430115841 |
| Rifle Type | semi auto |
| Platform | AR15 |
| Caliber | 5.56 NATO |
| Chamber | 5.56 NATO |
| UPC | 819064019176 |
Barrel
| Barrel Length | 11.5" |
| Barrel Finish | chrome-lined |
| Twist Rate | 1:7 |
Receiver
| Receiver Type | forged |
| Forward Assist | No |
| Dust Cover | No |
Handguard
| Handguard Type | m-lok |
| Free Float | No |
Muzzle
| Suppressor Ready | No |
Sights & Optics
| Optic Ready | No |
Dimensions & Weight
| Weight | 6.1 lbs |
| Magazine Capacity | 30 rounds |
Finish
| Finish | black |
Compliance
| CA Compliant | No |
| Classification | Short Barrel: Verify Classification |
| NFA Item | Verify with retailer |
What's Included (Complete Rifle)
This is a complete, ready-to-shoot firearm.
Upper Receiver
Lower Receiver
forged
Barrel
11.5"
Bolt Carrier Group
Handguard
m-lok
Stock / BraceVerify with retailer
Grip
Trigger
Muzzle Device
Charging Handle
Gas Block
Gas Tube
Buffer Tube
Backup Iron Sights
Optic
Stock / Brace: Verify with retailer
We cannot confirm from available data whether this firearm includes a stock or brace. This distinction determines its legal classification.
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Manufacturer · Tier 1
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State Check
This rifle has NFA or magazine considerations →
Home of the SR-15 and SR-25 platforms. One of the original AR innovators, with deep military roots and a premium price tag to match.
View brand profile →Sr-15 Ks-3 5.56 Nato Semi-Auto Rifle - Sr-15 Ks-3 5.56 Nato 11.5" Bbl (1)30rd Mag M-Lok Black
121441
Across 1 retailer
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