Reduced weight firearm
A rotating bolt firearm may be configured to fire a .308 cartridge. However, the firearm may have a reduced weight in comparison to standard .308 rifles. The firearm may have many components typically used in a .223 rifle. The firearm may include a barrel extension with an extractor gap, which allows a .308 bolt to fit within a .223 sized barrel extension. The firearm may comprise an elongated magazine well in comparison to a .223 mil-spec rifle. The firearm may weigh less than 6.8 pounds with a 16 inch barrel, or less than 6.3 pounds with a 10.5 inch barrel.
1. A firearm comprising:
a receiver;
a barrel coupled to the 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, an extractor gap located between the first lug and the second lug, and a feed ramp located between the third lug and the fourth lug.
2. The firearm of claim 1 , wherein the extractor gap comprises a 90 degree portion of the barrel extension.
3. The firearm of claim 1 , wherein the barrel extension comprises seven lugs.
4. The firearm of claim 1 , further comprising an extractor, configured to be located within the extractor gap.
5. The firearm of claim 4 , wherein the extractor comprises 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.
6. The firearm of claim 5 , wherein the barrel extension is sized for a .223 caliber barrel.
7. The firearm of claim 6 , wherein the firearm is configured to fire a .308 cartridge.
8. The firearm of claim 6 , further comprising a magazine well, wherein the magazine well has an opening of at least 2.80 inches.
9. The firearm of claim 8 , wherein the magazine well is configured to receive a .308 cartridge.
10. The firearm of claim 1 , wherein a weight of the firearm is less than 6.3 pounds.
11. The firearm of claim 8 , wherein the magazine well defines a finger placement notch.
12. The firearm of claim 1 , further comprising grooves in a neck portion of a chamber of the barrel.
13. The firearm of claim 12 , wherein the grooves are configured to facilitate extraction of a cartridge.