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Diamondback Firearms DB15300 Centerfire Rifle

Item # 754891
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Additional Information:

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  • To buy online and deliver to a Gander Mountain store or an Independent Firearms Dealer, simply add this item to your cart. Click here for additional details.
  • Firearms shipping charge of $25.00 per item.
  • You must be at least 18 years old to purchase this item. State and local laws may vary.


  • Fires .300 AAC Blackout Rounds

  • 16" Free-Floated M4 Contour Barrel

  • A2-Style Flat-Top Rail & Modified Four Rail

  • ATI Strikeforce Adjustable Stock

  • 30-Round Magazine

Product Summary

Diamondback Firearms DB15300 rifles are made entirely in the USA, starting with the tried-and-true, U.S. Military-proven gas-impingement system and using only the highest quality components machined in Diamondback's CNC facility. The DB15300 fires the popular .300 AAC Blackout round, a new leap forward in ammunition technology. Every DB15300 stars with a 16" 4140 chrome-moly, M4 contour barrel that's free-floated. Both the upper and lower receiver are constructed from forged 7075 T6 aluminum and the upper has an A2-style flat-top with a full-length top rail that provides nearly endless optics mounting options. An aluminum modified four rail is standard as well for all of your other accessory mounting needs. The ATI Strikeforce stock has an aluminum civilian buffer tube assembly and is collapsible for length-of-pull adjustments. A2 flash hider. 30-round magazine. 1 in 9" twist.

Model DB15B300
Type Centerfire Rifle
Action Semi-Auto
Caliber .300 AAC Blackout
Barrel Length 16"
Weight 6.87 Lbs.
Sights Full-Length Top Rail
Finish: Stock Matte Black Synthetic
Finish : Barrel & Receiver Black Steel
Safety Lever
Capacity 30-Round Magazine