Anonymous ID: 5eba88 July 25, 2024, 5:50 p.m. No.21293793   🗄️.is 🔗kun   >>3818 >>3836 >>4057 >>4422 >>4465

This is from Brave, where are the casings, again?

 

Ar15 shell casing ejection

The direction of spent case ejection from an AR-15 rifle is referred to as the “ejection pattern.” This aspect is crucial for shooters, especially those who handle their firearms frequently, as hot brass cases can cause burns.

 

Desirable Ejection Angle

 

According to various sources, a conventional and ideal ejection pattern for an AR-15 is between 3:00 and 4:30 o’clock, measured from the ejection port (center) to the stock (6:00). This range allows for efficient case ejection, reducing the risk of cases bouncing off nearby surfaces or hitting bystanders.

 

Variations and Considerations

 

Some AR-15s may eject cases between 12:00 and 3:00 o’clock, which is still within acceptable parameters. However, ejection patterns outside this range can indicate issues with the rifle’s functioning, such as over-gassing (0-90 degree angle) or improper extraction.

 

Factors Affecting Ejection Pattern

 

The ejection pattern can be influenced by various factors, including:

 

Buffer spring and BCG (Bolt Carrier Group) combinations

Gas block and upper receiver design

Ammunition type and pressure

Conclusion

 

In summary, a well-functioning AR-15 should eject spent cases between 3:00 and 4:30 o’clock. Deviations from this range may indicate potential issues with the rifle’s operation. Understanding and adjusting these factors can help achieve a reliable and safe ejection pattern.

Anonymous ID: 5eba88 July 25, 2024, 5:56 p.m. No.21293836   🗄️.is 🔗kun   >>4057 >>4422 >>4465

>>21293793

Ar15 shell casing ejection distance

Based on the search results, here are the key findings:

 

Conventional wisdom suggests spent cases should ideally eject between 3:00 and 4:30 on a clock face, with the ejection port at the center.

However, actual ejection distances can vary significantly. For example:

In one instance, using American Eagle 147 grain FMJ ammo (9mm), cases landed about 9 feet away, to the right and behind the shooter at approximately the 4:30 position.

Another study found that ejected shell casings can land anywhere within a 24-foot span, including:

12 feet to the shooter’s right rear

12 feet to his left front

10 feet apart, even with the same gun and shooter

The adjustable gas block may also impact ejection distance. Reducing the gas setting on a 6.5CM AR-15 rifle resulted in cases ejecting closer to the 4:00 position, but still landing 8 feet away.

In summary, AR-15 shell casing ejection distance can vary greatly, ranging from approximately 9 feet to 24 feet, depending on factors such as ammunition type, shooter position, and gas block settings.