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Si-Defense .308 Ambi SS Battle Rifle

SI-D is introducing a highly sophisticated rifle with a matched grade 416 SS Black Nitrite barrel. It is identical in nearly every way to the SI-D .308 AMBI CF Battle rifle. The exception, this beast comes standard with a high performance steel barrel that brings performance to another level. The rifle was engineered and designed to incorporate innovation, with several patent pending technologies, emphasizing accuracy, reliability, and dependability. With relentless testing, innovation, and determination, we feel we have built one of the best rifles possible.
Only 2 left

Availability: In stock




A great deal of attention was given to incorporate smooth transitions throughout the rifle, giving it a feel of confidence and reliability. Weight reduction was made without compromising strength and integrity. All of this innovation is backed up with a life-time limited warranty. Every barrel and weapon sold at SI-D is tested and proven before it leaves our factory. All of our weapon systems are 100% American made at our factory in the State of Montana.

  • Ambi SI-D 308 7075-T6 Billet Lower Hard Black Anodized
  • Ambi SI-D 308 7075 Billet Upper Hard Black Anodized
  • Ambidextrous Mirrored Controls
  • Billet Machined Bolt/Mag Release
  • Ambidextrous Take Down Pins
  • Quick Snap Dust Cover
  • Forward Assist
  • Flared Magwell
  • Integrated Trigger Guard
  • Barrel: 416 SS Black Nitrite 16” 1:10 Twist
  • Light Weight Free-Float 15.5” Key-mod
  • BCG: SI-D High Pressure Black Nitride Coated
  • CMC Trigger
  • Mission First Tactical Stock - Battle Link
  • Charging Handle: Ambi
  • Battle Arms Development Selector - 50 degree Short Throw (STD/STD)
  • Muzzle Break: Fortis Red
  • 20 Round Mag Included


FFL Required Before Shipping.

Please have your dealer email their license to or they can also fax it in. Please give us a few days to process the information.

Additional Info

Additional Info

Manufacturer Si-Defense
Finish No
Barrel Length No
Caliber No
Configuration No
Option No
Gas Length No
Height No
Rail Length No
Mount No
Profile No
Reticle No
Co Witness No
Size No


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