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Military Guns and Ammunition

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This is intended for people interested in the subject of military guns and their ammunition, with emphasis on automatic weapons.

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LMAO Germany adopts an AR-15   Small Arms <20mm

Started 14/9/20 by QuintusO; 35339 views.
poliorcetes

From: poliorcetes

22/9/20

I guess this channel will be interesting for you:

https://www.youtube.com/channel/UC6htLMymL0WJSNe109iBU1A

grand-grand-grandfathers of pocket knifes aka navajas

poliorcetes

From: poliorcetes

22/9/20

I'm trying to fully understand the role of a replaceable cam in extending rifle's lifespan

Would you be (or anybody) be so kindly to develop it?

QuintusO

From: QuintusO

22/9/20

An AR-15 does not have APE which means the interior of the aluminum receiver stops the bolt from locking prematurely. Over time the wall of the receiver at the cam pin location wears out and the upper has to be replaced.

tidusyuki

From: tidusyuki

23/9/20

The wears could also be minimized by using a roller cam pin. Then again it's patented stuff so companies don't go around making one.

Wonder why E. Stoner made the cam pin rectangular instead of smooth rounding in the first place.

  • Edited 23 September 2020 5:03  by  tidusyuki
QuintusO

From: QuintusO

23/9/20

The roller isn't in patent. There are Armalite guns from 1960 with roller cam pins.

It's ultimately unnecessary and adds cost, which is probably what they were thinking at the time (would have been Sullivan and Fremont). However I agree a roller is an improvement. My guns avoid this issue entirely by using an APE rod.

roguetechie

From: roguetechie

23/9/20

The APE rod is ideally the best way to go yeah

nincomp

From: nincomp

23/9/20

I apologize in advance but... would an up-scaled 50 BMG variant use a Great Ape rod?

QuintusO

From: QuintusO

23/9/20

There's no reason it couldn't.

Jeff (Jefffar)

From: Jeff (Jefffar)

23/9/20

nincomp said:

I apologize in advance but... would an up-scaled 50 BMG variant use a Great Ape rod?

Are you trying to make a monkey out of us? 

poliorcetes

From: poliorcetes

24/9/20

Thank you, Nathaniel. What does APE mean?

Thinking about the entire fleet, what I understand is that uppers are intended to resist a huge amount of rounds shooted. Three barrels would be changed during the entire lifecycle of the product, more or less?

Have 416 design implement such a cam replacement? I wasn't aware of it

Thanks again

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