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The Cry Havoc Tactical QRB (Quick Release Barrel) 1 Pin Upper Receiver Takedown Kit for AR-15 style rifles or pistols. Change calibers in seconds! The QRB allows you to remove the barrel of your rifle or pistol quickly. No drilling or modifications needed!


Fit your AR-15 Carbine or Pistol into a Backpack or Bugout Bag with ease. Perfect for discreet transport.

Assemble and Fire in seconds, even in low light. Able to KEEP strong hand on grip - Nothing to Depress or twist with strong hand.

Use gross motor skills to assemble due to two-piece gas system. No lining up tiny gas access hole with gas tube first!

Able to use a wide range of Free Float Hand Guards for the attachment of Back-up Iron Sights and accessories.

Super-fast barrel and upper cleaning.

The QRB can retain POA/POI as the barrel still ""head-spaces," off the stock positions (our tests have shown accuracy retained to less than 1 MOA of original rifle setup!).

With the purchase of an additional Barrel Lock Plate, switching to a different barrel length or caliber, like the 300 Blackout, takes just seconds!

Proudly made in the USA

The QRB Kit can only be used on Barrels with a maximum outside diameter of 0.985"" and Free Float Hand Guards with a maximum width of 2.0"" Also the QRB will add 1.5"" to the length of your free-floating hand guard.


To purchase the proper kit simply selection the gas tube option that matches up with your barrels gas system length. A kit designed for pistol caliber AR’s that does not include a gas tube is available as well.

Includes Barrel Plate, Receiver Plate, Star Nut, and Receiver Plate alignment Pin.