• Fit your AR-15 Carbine or Pistol into a Backpack or Bugout Bag with ease. Perfect for discreet transport.
• Assemble and Fire in seconds with little to no practice, even in low light, using GROSS Motor Skills due to our shortened gas tube!
• No tax stamp needed on 16" barreled rifles.
• Able to use a wide range of Free Float Hand Guards for the attachment of Back-up Iron Sights and accessories.
• Makes barrel and upper cleaning a "snap".
• 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 Motorcycle Police who might not have room for a standard AR-15/M4, to Operators in areas where an exposed AR-15/M4 might bring unwanted attention, or even the Coast Guard for ship boardings where an exposed AR-15/M4 may make innocent civilians uneasy but having a rifle as backup is a huge plus. In these and other cases, where there may be a need for an AR-15/M4, the QRB now makes it possible! Better to have it with you and not need it - then the opposite!!!
Each kit contains complete instructions and all parts to convert your rifle or pistol WITHOUT 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. 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 firstname.lastname@example.org 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 (.985" 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, Areo Enhanced mlok V2, Matrix Charlie, Foxtrot & Lavi, Unique AR's and others. The QRB is for Gas Impingement Systems 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.
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.
*** Our QRB System is designed to work on gas impingement weapons only, with Free Float Hand Guards with a width of 2" or less. *** UPDATE: Our 308 "Big Boy" conversion is now available!!! This works with the DPMS/SR-25 thread pitch, not the Armalite AR10. Check out our 308 QRB link in the menu bar for more info.
Our Patented Quick Release Barrel Kit for the AR-15/M4 lets your rifle or pistol easily fit into a backpack, a bug-out bag or even a briefcase for discreet carry. 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.
NOW YOU CAN TAKE IT WITH YOU!!!
SBR with 11.5" Barrel,
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,
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!
HARD TO DENY THE NUMBERS or PICTURES!!!
Compare the two largest pieces:
SBR at 21" QRB barrel at 17.5"