SR-15 KS-1 5.56 NATO SEMI-AUTO RIFLE – SR-15 KS-1 5.56 NATO 13.7” BBL (1)30RD MAG M-LOK BLACK

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KNIGHT'S ARMEMENT SR-15 KS-1 5.56 NATO SEMI-AUTO RIFLE
 
The KS-1 features a 13.7” heavy profile ball-mill dimpled cold hammer forged barrel. This carbine allows a small, high efficiency suppressor to be attached and still maintain an overall length similar to a 10.3” barrel with a standard suppressor, but with significantly higher muzzle velocity. The heavy profile barrel resist heat-induced shift, maintaining point of impact throughout long-duration use. Ball mill dimpling aids in weight reduction while reducing heat-related shift effect that can be seen with traditional fluting.
 
SPECS
  • Barrel: 13.7”, cold hammer forged, 1:7” twist, chrome lined, dimpled heavy profile
  • Cartridge: 5.56 NATO
  • Weight: 6.88 lbs.
  • Length: 30.2” – 33.5”
  • Cartridge: 5.56 NATO
Description

Original price was: $3,123.14.Current price is: $2,511.30.

KNIGHT'S ARMEMENT SR-15 KS-1 5.56 NATO SEMI-AUTO RIFLE
 
The KS-1 features a 13.7” heavy profile ball-mill dimpled cold hammer forged barrel. This carbine allows a small, high efficiency suppressor to be attached and still maintain an overall length similar to a 10.3” barrel with a standard suppressor, but with significantly higher muzzle velocity. The heavy profile barrel resist heat-induced shift, maintaining point of impact throughout long-duration use. Ball mill dimpling aids in weight reduction while reducing heat-related shift effect that can be seen with traditional fluting.
 
SPECS
  • Barrel: 13.7”, cold hammer forged, 1:7” twist, chrome lined, dimpled heavy profile
  • Cartridge: 5.56 NATO
  • Weight: 6.88 lbs.
  • Length: 30.2” – 33.5”
  • Cartridge: 5.56 NATO

Out of stock

SKU 430115839 Category

Description

KNIGHT'S ARMEMENT SR-15 KS-1 5.56 NATO SEMI-AUTO RIFLE
 
The KS-1 features a 13.7” heavy profile ball-mill dimpled cold hammer forged barrel. This carbine allows a small, high efficiency suppressor to be attached and still maintain an overall length similar to a 10.3” barrel with a standard suppressor, but with significantly higher muzzle velocity. The heavy profile barrel resist heat-induced shift, maintaining point of impact throughout long-duration use. Ball mill dimpling aids in weight reduction while reducing heat-related shift effect that can be seen with traditional fluting.
 
SPECS
  • Barrel: 13.7”, cold hammer forged, 1:7” twist, chrome lined, dimpled heavy profile
  • Cartridge: 5.56 NATO
  • Weight: 6.88 lbs.
  • Length: 30.2” – 33.5”
  • Cartridge: 5.56 NATO

Additional information

Weight 12.5 lbs
Model

SR-25

Capacity

30+1-Round

Make

Knights Armament

Magazine Included

1 x 30-Round

Muzzle

Flash Hider

Front Sight

Flip Up

Stock Material

Polymer

Length

NA

Weight

6.88 lbs

Make/Model

Knights Armament, SR-25

Barrel Length

13.7''

Magazine Type

Removable

Action Type

Semi-Auto

Rear Sight

Flip Up

Cartridge

AKK_5.56 x 45

Finish

Black

Frequently Asked Questions

Are these brass cases and reloading components factory-new or once-fired? +

We stock both premium factory-new components and high-quality once-fired brass. Please check the specific product listing title and description carefully; once-fired brass is fully inspected, but we always recommend resizing and inspecting prior to priming and powder charging.

Will this case trimmer gauge or die set work with my progressive press setup? +

Our standard reloading dies and case length trimmer accessories utilize industry-standard threads (typically 7/8"-14) compatible with major single-stage, turret, and progressive presses like RCBS, Hornady, Lee Precision, and Dillon. Caliber-specific trim gauges must match your exact brass caliber.

Do you enforce shipping restrictions on powder, primers, or live ammunition? +

Yes. Non-hazardous reloading equipment (dies, case length trimmers, gauges, and unprimed brass) ships via standard ground carriers with no extra fees. Any orders containing smokeless powders or primers will incur standard federal HazMat handling fees and cannot be shipped via air transportation.

How can I track my shipment to ensure delivery safety? +

Precision reloading gear is valuable, so all orders are shipped with tracking enabled. As soon as your package is dispatched from our inventory warehouse, a tracking number will be emailed to you. You can monitor your shipment directly on our Track Order page using your unique Order ID.

Can I return precision measuring tools or die components if they don’t fit? +

We accept returns on unused, unaltered tools, case preparation equipment, and unopened component boxes within 30 days of item delivery. Due to safety and strict quality control on the reloading bench, we absolutely cannot accept returns on opened packs of primers, smokeless powder, or processed brass casings.