Cry Havoc Takedown Kit QRB Quick Detach Barrel

Mar 7, 2021 | 308 AR Barrels, 6.5 Creedmoor Barrels, AR 308 Receivers

Cry Havoc 308 AR Upper Receiver Takedown Kit
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Cry Havoc QRB 308 AR Upper Receiver Takedown Kit

Cry Havoc Takedown Kit (QRB Barrel Kit)

Cry Havoc Tactical takes their QRB (Quick Release Barrel) Upper Receiver Takedown Kit and scales it up for the big guns!
Designed for your AR 308 or 6.5 Creedmoor the QRB allows you to quickly detach the barrel giving you the ability to store or carry your rifle in a much-reduced profile and then when needed quickly reassemble the rifle while holding within 1 MOA.

Each Cry Havoc Takedown Kit contains complete instructions and all parts to convert your rifle or without drilling or any permanent modifications. Although they recommend installation be done by a Gunsmith, if you can install a barrel on an upper receiver, you can install this kit. Simple hand tools, an Armour’s wrench, and receiver block/vise are all that are needed. Returning your rifle or pistol back to stock is as easy as the installation.

The QRB main body is Hard Anodized Aluminum and the Stainless-Steel hooks, levers, star nut, and gas extension are finished in Black Nitride for maximum durability.

Available from Brownells

Once the QRB Kit is installed, it is amazingly quick to assemble your rifle or pistol without the worry of damaging your gas tube. The operator would simply lock the bolt back, insert the barrel extension into the receiver, rotate the barrel until the alignment pin enters the alignment hole, and then seat the barrel in place. Next, hook the two clips on the receiver plate and engage the levers to the closed position, never taking your hand off the pistol grip. Nothing to depress! Just drop the bolt and you are ready to fire… All in less than 6 seconds!

To remove the barrel assembly for storage, first, remove the magazine, lock the bolt back, check for an empty chamber, pull levers away from the handguard, remove hooks from the receiver plate and pull the barrel away from the receiver. Just that simple. No barrel rattling around in the handguard or gloves needed! Make sure to check out the videos in the Media Tab to see these steps happen in real-time. You will be amazed.

  •  The QRB Kit is only compatible with Free Float Hand Guards 2.2″ wide or less and will add 1.7″ to the length of the Hand Guard.
  • Purchase the correct kit by selecting the proper length gas tube to your barrels gas system length.

Cry Havoc Takedown Kit 308 QRB (308 AR Upper Receiver Takedown Kit)

From Cry Havoc Tactical

Our Cry Havoc Takedown Kit currently in use by the United States Air Force, utilizing the GAU-5A Aircrew Self Defense Weapon is the most compact and effective survival rifle for a downed Pilot. Used in the ACES II Ejection Seat Survival Kit, the GAU-5A has four magazines totaling 120 rounds, allowing a downed pilot enhanced protection. A QRB Kit-equipped AR-15 Carbine or Pistol gives you the smallest possible package with NO drilling or modifications to your existing AR Platforms! Easy ONE HAND operation. You want compact – You got it!

Now you can have The Ultimate Take Down Rifle! Our Patented 308 QRB System is designed to work on YOUR gas impingement DPMS/SR25 style rifle with a Free Float Hand Guard system 2.2″ wide or less and will add 1.7″ to the length of the Hand Guard. Now the Rifle System can break down to just the length of the barrel, meaning a 16″ 308 Carbine becomes two pieces under 17″ total, WITHOUT the worry of a full-size gas tube protruding beyond the barrel end, just waiting to be damaged!

Other possibilities available are the ability to do a 12.5″ pistol with a LAW Tactical folding “stabilizer” and have a 13″ 308 Package Pistol capable of firing 150-grain bullets at 2450 fps. Hard to match that with a 300 Blackout firing a 150 grain out a 16″+ barrel. This IS compact firepower!!! Watch your eyebrows! The United States Patent # 6829855

Now for your 308 or 6.5 Creedmoor. Have your large caliber with you at all times. The “Big Boy” QRB allows you to remove the barrel of your DPMS/SR25 Style rifle or pistol quickly. NO drilling or modifications needed!

  • Able to take along your AR308 style rifle in a small package.
  • Assemble converted rifle in seconds, even in total darkness.
  • Easily convert to multiple calibers – like 308 NATO to 6.5 Creedmoor.
  • Holds within 1 MOA of original rifle.
  • Easy install; Can be done without special tools if on a new install. No permanent modifications.
  • Proudly made in the USA – that means something to us.

Includes Barrel Plate, Receiver Plate, Gas Extension, and Gas Tube.

The 308 QRB Kit can only be used on Barrels with a maximum outside diameter of 1.200″ and Free Float Hand Guards with a maximum width of 2.2″ Also the QRB will add 1.5″ to the length of your free-floating handguard.