Knight's Armament SR-15 KS-2 14.5" M-LOK

Current-production SR-15 E3.2 carbine with 14.5" service-length barrel and 12.75" URX6 handguard.

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Key Highlights

•14.5" service-length barrel for full 5.56 velocity
•Pin-and-weld to 16" or run as an SBR

Specifications

Price: $3,144
Weight: 6 lb 5 oz
Calibers: 5.56mm NATO
Rail Type: mlok
Best For: duty patrol outdoor defense competition

Capability Profile

0-10 Scale Across 8 Axes

Compatibility Tags

family: modern-riflefamily: ar-patterntrigger: ar-fcginterface: picatinny-tophandguard: mlokbarrel: standardmag-type: stanagthread: 1/2x28suppressor-mount: kac-qdc-556receiver-pattern: ar-15

Overview

The Knight's Armament SR-15 KS-2 carries the 14.5" service length that the U.S. military standardized on, wringing the most 5.56 velocity out of the platform without crossing into rifle-length awkwardness. Pinned and welded to a 16" overall barrel it becomes a non-NFA carbine; left at 14.5" it is a short-barreled rifle. Either way it is the KS-series configuration most shooters reach for as a do-everything fighting carbine.

Like the rest of the KS line it runs the E3.2 dual-ejector bolt and the self-indexing Mod 2 gas system, KAC's answer to reliable cycling whether the rifle is suppressed, cold, or filthy. The 12.75" URX6 handguard gives a long sight radius and plenty of real estate for lights and lasers, and the drop-in two-stage match trigger breaks clean for precise shot placement at distance.

Key Features

14.5" cold hammer forged barrel, 1:7 twist
E3.2 dual-ejector bolt for suppressed and unsuppressed reliability
Self-indexing Mod 2 gas system with straight gas tube
12.75" URX6 M-LOK handguard with full-length 12:00 1913 rail
Drop-in two-stage match trigger with integral trigger guard
QDC-compatible flash hider for KAC quick-detach suppressors
KAC 200-600m micro flip-up front and rear sights

Pros

+14.5" service length maximizes 5.56 velocity
+Can be pinned to 16" to avoid NFA registration
+E3.2 bolt and Mod 2 gas tuned for hard suppressed use
+Longest URX6 in the KS line for sight radius and accessory room
+Drop-in two-stage match trigger

Cons

−Premium pricing well above mainstream duty carbines
−Left at 14.5" it is an NFA short-barreled rifle
−Limited dealer availability and frequent backorders

Detailed Specifications

sku: KM121440
caliber: 5.56mm NATO
Barrel Length: 14.5"
Overall Length: 33" - 35"
weight: 6.3 lbs
Gas System: Direct impingement with KAC Mod 2 gas system
railSystem: M-LOK (URX6 12.75")
Trigger: Two-stage match
Twist Rate: 1:7
barrel: Cold hammer forged
Muzzle Device: QDC-compatible flash hider
nfaStatus: Short-barreled rifle at 14.5"; non-NFA when pinned and welded to 16"
status: Current-production KAC KS-series carbine