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 is able to 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!



While the QRB was primarily designed for the civilian market, non-civilian applications range from the Air Force using the QRB on the Air Crew Survival Weapon (GAU-5A) for ALL Fighters and Bombers, Motorcycle Police who did not have room for a standard AR-15/M4, to Operators in areas where an exposed AR-15/M4  might  bring unwanted attention.   In these and other cases, where there is a need for an AR-15/M4, the QRB now makes it possible to fit a rifle into a tight space but still have a usable barrel length for increased velocity!


Each kit contains complete instructions and all parts to convert  your rifle or pistol WITHOUT drilling or any permanent modifications.   Although we 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 is all that is needed. Returning your rifle or pistol back to stock is as easy as the installation. Make sure to watch the video in the Media Tab to see how easy it is to install. 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.


Once the QRB Kit is installed, it is amazingly quick to assemble your rifle or pistol without worry of damaging your gas tube. The operator would simply lock the bolt back, insert the barrel extension into the receiver, rotate 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 then 6 seconds!


To remove the barrel assembly for storage, first remove the magazine, lock bolt back, check for an empty chamber, pull levers away from the hand guard, remove hooks from the receiver plate and pull 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. Contact us at for more information.


The QRB Kit is only compatible with Free Float Hand Guards with a width of 2" or less and Mil-Spec barrels (.984" maximum barrel diameter) and will add 1.4" to handguard length.  We have tested and recommend the SLR ion & Solo, Most MidWest units, the YHM Customizable, the BCM GunFighter KMR, Seekins MCSR, NOXS & SP3R, Matrix Charlie, Foxtrot & Lavi, Troy Alpha, Lancer, Unique AR's and others. The QRB is for Gas Impingement Systems and Blow Back Weapons ONLY and is available for the Carbine, Mid Length, Rifle Length or Pistol Gas Systems. Contact us for info or help on choosing the right tube size for your weapon. The QRB is Patented in the USA


We also offer Installation Service for the QRB on your existing rifle or new build. CLICK HERE for more details.


 Click Here to Order - $349 shipped


All parts are Designed, Machined and Assembled in the USA





From This 33.5" long Carbine...

To This -  17.5" long!

Ready for your Pack.

QRB Kit (Quick Release Barrel) Make your ar-15 the ultimate pack gun

Copyright 2015

Releasing The Barrel

**** Our QRB System is designed to work with Gas Impingement or Blow Back Weapons using Free Float Hand Guards 2" wide or less. **** The QRB has successfully been used on 223/556, 7.62x39, 22 Rimfire, 9mm, 40 Caliber, 45 Caliber, 300 Blackout, Bushmaster 450, 458 SOCOM and 50AE. If looking to use with a AR10 Style 308 or 6.5 Creedmoor, make sure to check out the 308 QRB tab!

Our Patented Quick Release Barrel Kit for the AR-15/M4 lets YOUR rifle or pistol easily takedown into a very small package without drilling or other modifications to install. As an example below, a 16" Barreled Carbine with an overall length of 33.5" now becomes two 17.5" pieces.  Try that with just removing the upper with pushing the pins - you'll end up with a 16" piece and a HUGE 25+" piece -  Forget fitting that in a small pack or briefcase without sticking out. THE QRB is for those who don't want to leave their rifle at home.



SBR with 11.5" Barrel,

OAL 28.5"

How can a 16" Barreled Carbine be smaller than a 11.5" Barreled SBR?

When it has a QRB installed!!!!

Check it out:


Largest piece is 21" long

Carbine with 16" Barrel with QRB,

OAL 33.5"


Largest piece is 17.5" long

With a QRB, a 16" Barreled Carbine becomes smaller than a 11.5" barreled SBR and is actually able to fit in a smaller pack, without the $200 Tax Stamp.

This comparison shows just how small your rifle can get!



Compare the two largest pieces:

SBR at 21"    QRB barrel at 17.5"