Quarter Circle 10 AR-15 Glock Small Frame Lower Receiver

These lowers are manufactured by us at our facility in Tucson, Arizona. They are CNC machined from 7075 aluminum in house on our machines. They will accept all Glock 9mm, 357 Sig and .40 S&W magazines. These lowers were designed for the purpose of engaging targets beyond pistol ranges. This is the perfect platform for any tactical application or just a fun day at the range.
With just a change of your bolt and barrel you can go switch between 3 different calibers all with the same lower and upper. Having one of our Pistol Caliber Carbines and a handgun that shoots the same round enables shooters to carry one type of ammunition, and feed both guns from one magazine. Running short on one type of ammo doesn’t happen; both guns stay in the fight until the last round is gone. The concept is not unique to modern times. Lawmen in the Old West sometimes carried revolvers that chambered the same rounds as their trusty lever-action rifles. Maintaining only one kind of cartridge made sense to a lot of men on the trail back then, just as it still does for many officers and civilians on the street today.
 
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