Cobalt Blaster Builder
CK-Pro Fast Eddie 13.9″ 5.56×45
$2,299.99
- 13.95” Greenline Tactical/ Rosco Mfg. K9 series hybrid barrel.
- 5.56X45mm (NATO)
- 1/7 RH twist
- Mid-length gas
- 416R Stainless Steel barrel
- Electro polished & Nitride coated
- Continuous taper hybrid contour
- Recessed target crown
- Upper: 7075 T6 billet (Features Cobalt S.I.M.S. system).
- Lower: 7075 T6 billet (feature integrated trigger guard).
- Handguard: 13” 6061, 7-sided, M-Lok compatible.
- Muzzle device: RCB-KM
- Gas block: Cobalt (Non-Adj.), .750 Dia.
- BCG: Cobalt, Full-Auto.
- Charging handle: Radian Raptor LT.
- Safety: Cobalt, Ambi.
- Mag release: Ambi.
- Trigger: Geissele 2-stage.
- Buffer system: A5/ CK buffer system, anti-tilt buffer.
- Grip: Reptilia CQG-L pistol grip.
- Stock: Reptilia RECC-E stock (A5 compatible)
- Warranty: LIFETIME
In-Depth Information
CK-Pro Fast Eddie 13.9″ 5.56×45 Details
Description
A collaboration between Cobalt Kinetics X Greenline Tactical Consulting, The “Fast Eddie” is designed to meet and exceed the criteria for a practical rifle that can perform in the most austere (and unforgiving) environments while still being a refined tool. Critical factors taken into consideration during the design phase were; Accuracy, Operation, Recoil Mitigation, and Ambidextrous Adaptability. The end result is an elegant solution that shows what proper design and meticulous attention to detail can provide. *Final product may differ slightly from image shown. Please reference specs for accuracy of what you will receive when purchased.
Each CK-Pro comes with a LIFETIME WARRANTY.
*Exclusively Available at Firearms Depot
Pro Buffer System
Cobalt’s Pro Buffer System is among the most effective performance upgrades available for the AR today. The Pro Buffer System gives you an advantage by creating a smoother action and reducing recoil. We use low-friction, energy-absorbing polymers to make the buffer components and even the receiver extension is lined with a hard polymer film. All Cobalt Kinetics firearms include the Pro Buffer System out of the box.

Fit and Fitment
Go ahead. Grab your AR by the grip and give it a shake. Hold the handguard along with the grip and twist the rifle. The loose fitment and structural integrity of a normal firearm are completely eliminated with a Cobalt.
Cobalt Dual Drop
Cobalt’s patented Dual Drop mechanism is expanding the functionality of the classic AR-15 platform. Dual Drop improves weapon handling and reload speed faster. We put the system’s controls within reach of the thumb of the shooting hand. The Dual Drop adds a second forward assist control- mirrored on the left side of the upper receiver and mechanically connected to the right side assist and the bolt catch. Without adjusting your grip, you can press either forward assist and the bolt is released to reload the firearm.
