FIELD OF THE DISCLOSURE

The disclosure relates to devices, systems, and methods for providing a reduced weight firearm. More specifically, this disclosure provides devices, systems, and methods for reducing weight and increasing the operational efficiency of AR-15 style firearms.

BACKGROUND

Many firearm users prefer a .308 caliber rifle, as opposed to a .223 caliber rifle. However, the weight of a .308 caliber rifle is typically significantly greater than that of a .223 caliber rifle, which can offset some of the advantages of a .308 caliber rifle.

SUMMARY

An AR-15 style rifle may comprise an upper receiver assembly configured to fire a .308 caliber cartridge; and a lower receiver assembly, wherein the AR-15 style rifle has mil-spec controls.

In various embodiments, the rifle may comprise a .223 sized barrel extension. The rifle may have a weight of less than 6.8 pounds. The rifle may have a weight of less than 6.3 pounds.

A rotating bolt firearm may comprise an upper receiver; a lower receiver coupled to the upper receiver; a barrel coupled to the upper receiver; and a barrel extension coupled to the barrel, wherein the barrel extension comprises a first lug, a second lug, a third lug, a fourth lug, a fifth lug, a sixth lug, a seventh lug, and an extractor gap located between the first lug and the second lug.

In various embodiments, the first lug and the second lug may be separated by 90 degrees. The barrel extension may consist of seven lugs in total. The firearm may comprise an extractor configured to be located within the extractor gap. The extractor may comprise an extractor lug extending from a first side of the extractor, and wherein the extractor lug does not extend to a second side of the extractor. The barrel extension may be sized for a .223 caliber barrel. The rotating bolt firearm may be configured to fire a .308 cartridge. The firearm may comprise a magazine well, wherein the magazine well has an opening of at least 2.80 inches. The magazine well may be configured to receive a .308 cartridge. The barrel may comprise a length of 10.5 inches. A weight of the rotating bolt firearm may be less than 6.3 pounds. The magazine well may comprise a finger placement notch. The firearm may comprise grooves in a neck portion of a chamber of the barrel. The grooves may be configured to facilitate extraction of a cartridge.

