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Diamondback DB15 5.56 Semi-Auto Rifle – California AR-15 Rifle

(6 customer reviews)

Original price was: $997.99.Current price is: $748.99.

The Diamondback DB15 delivers reliable performance with its 5.56 NATO chambering and 16-inch barrel. This California-compliant rifle features Magpul furniture and comes ready for customization with its M-LOK handguard.

6 in stock

SKU: DBG-2903-CA-FD0CE Category: Tags: , ,

Description

Engineered for precision and durability, the Diamondback DB15 represents a solid foundation for California shooters seeking a dependable AR-15 platform. Manufactured entirely in the United States, this rifle incorporates proven design elements with modern enhancements suitable for range use and tactical applications.

Built around a 7075 T6 aluminum receiver with a black finish, the DB15 utilizes a direct gas impingement system that has demonstrated reliability across various conditions. The 16-inch barrel, crafted from 4140 chrome moly steel and treated with black nitride, features a 1:8 twist rate optimized for stabilizing a wide range of 5.56x45mm NATO ammunition. This configuration ensures consistent accuracy whether you’re at a range in Sacramento or participating in training exercises.

  • Brand: Diamondback
  • Model: DB15
  • Caliber: 5.56x45mm NATO
  • Action: Semi-Auto
  • Barrel Length: 16 inches
  • Barrel Material: 4140 Chrome Moly
  • Barrel Finish: Black Nitride
  • Twist Rate: 1:8
  • Muzzle Thread: 1/2×28 TPI
  • Handguard: 15-inch M-LOK
  • Receiver Material: 7075 T6 Aluminum
  • Stock: Adjustable Magpul CTR
  • Grip: Magpul MOE K2
  • Sights: MBUS Folding
  • Capacity: 30+1
  • Overall Length: 32.75-36 inches
  • Weight: 6.95 pounds
  • Safety: Manual

The rifle comes equipped with Magpul’s CTR stock and MOE K2 grip, providing ergonomic control and adjustability for different shooting positions. The 15-inch M-LOK handguard offers ample real estate for mounting accessories while keeping weight manageable. California firearms enthusiasts in Los Angeles will appreciate the DB15’s compatibility with most AR-15 components, allowing for personalized configuration while maintaining compliance with state regulations.

Included with the rifle are flip-up sights, a cable lock, and an owner’s manual. The flash hider at the muzzle helps reduce visible signature during daylight shooting. This Diamondback model ships with a 30-round magazine, though California customers should consult local laws regarding magazine capacity restrictions. All firearms from Cal Guns Depot require transfer through a licensed FFL dealer in California, with shipping available to locations throughout the state including San Diego.

Additional information

Firearm Type

AR-15 Rifle

6 reviews for Diamondback DB15 5.56 Semi-Auto Rifle – California AR-15 Rifle

  1. Robert S. (verified owner)

    First range trip with this DB15 surprised me with its consistency. Using standard 55-grain ammo, I was hitting steel at 200 yards without any adjustments. The ergonomics work well with California’s compliance features, and the rifle balanced nicely during rapid fire drills. After three sessions, I haven’t experienced a single malfunction.

  2. Nicole W.

    Put about 500 rounds through this DB15 over three trips to the outdoor range. The 5.56 chamber handled everything from 55-grain to 62-grain without issues. What impressed me most was how the California compliance features didn’t interfere with practical shooting. The rifle maintained solid accuracy even during rapid strings of fire.

  3. Jessica L.

    Took this to the range last weekend and was impressed with how it handled. The 5.56 rounds grouped nicely at 100 yards, but the trigger pull felt heavier than I expected. Still, for a California-compliant rifle, it’s reliable and accurate enough for my needs.

  4. Kevin M. (verified owner)

    As someone who’s owned several AR-platform rifles, I was curious how the California compliance would affect performance. The fixed stock actually provided a more stable platform for precision shots, and the 5.56 caliber delivered consistent results at our local range. After breaking it in, this became my go-to rifle for training sessions.

  5. Miguel C. (verified owner)

    I was worried about finding a compliant AR-15 in California, but this Diamondback DB15 handled everything perfectly. The fixed stock and fin grip felt secure at the range, and the 5.56 caliber had consistent accuracy. After a few hundred rounds, I’m confident this rifle meets all our state regulations without sacrificing performance.

  6. Daniel T. (verified owner)

    The rifle performed well during my visit to the local range, though I noticed it didn’t like the bargain steel-case ammo I tried first. Switching to brass 5.56 solved the feeding issues. For a California-legal AR, it’s well-built and handles nicely, just be prepared to spend a bit more on quality ammunition.

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