Knight's Armament Company
Knight's Armament SR-15 KS-1 13.7" M-LOK
Current-production SR-15 E3.2 carbine with 13.7" barrel, URX6 handguard, and Mod 2 gas system.
Key Highlights
- •Current-production SR-15 with E3.2 dual-ejector bolt
- •13.7" barrel balances reach and maneuverability
Specifications
- Price
- $3,288
- Weight
- 6 lb 14 oz
- Calibers
- 5.56mm NATO
- Rail Type
- mlok
Capability Profile
0-10 Scale Across 8 Axes
Compatibility Tags
Overview
The Knight's Armament SR-15 KS-1 is the current production refinement of KAC's SR-15 line, replacing the legacy E3 Mod 2 carbines. The 13.7" cold hammer forged barrel sits a hair under the 14.5" service length, splitting the difference between handling and velocity while staying short enough to wield indoors. With a QDC-compatible flash hider pinned or unpinned, it runs as a short-barreled rifle or a 16" pin-and-weld build depending on configuration.
The KS-series carries forward the self-indexing Mod 2 gas system and the E3.2 bolt with dual ejectors, a combination KAC tuned specifically for reliable suppressed and unsuppressed cycling across temperature extremes. The URX6 handguard adds a full-length 12 o'clock 1913 rail over seven sides of M-LOK, and the integral trigger guard and ambidextrous controls round out a rifle built to be run hard.
Key Features
- 13.7" cold hammer forged barrel, 1:7 twist, ball-mill dimpled
- E3.2 dual-ejector bolt for suppressed and unsuppressed reliability
- Self-indexing Mod 2 gas system with straight gas tube
- 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
- +Current production, not a collector-market-only legacy SKU
- +E3.2 bolt and Mod 2 gas tuned for hard suppressed use
- +13.7" length is a strong all-around duty configuration
- +URX6 handguard with seven M-LOK sides and full-length top rail
- +Ambidextrous controls and integral trigger guard
Cons
- −Premium pricing well above mainstream duty carbines
- −13.7" barrel is an NFA short-barreled rifle unless pinned to 16"
- −Limited dealer availability and frequent backorders
Detailed Specifications
- sku
- KM121439
- caliber
- 5.56mm NATO
- Barrel Length
- 13.7"
- Overall Length
- 32.2" - 34.2"
- weight
- 6.88 lbs
- Gas System
- Direct impingement with KAC Mod 2 gas system
- railSystem
- M-LOK (URX6)
- Trigger
- Two-stage match
- Twist Rate
- 1:7
- barrel
- Cold hammer forged
- Muzzle Device
- QDC-compatible flash hider
- nfaStatus
- Short-barreled rifle (13.7" barrel)
- status
- Current-production KAC KS-series carbine
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