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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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Types of polymer used to make gun parts.   General Military Discussion

Started 6-Nov by tidusyuki; 704 views.
ZailC

From: ZailC

6-Nov

Nylon (polyamide) 6 and 66 are almost ubiquitous in light-weight, hard duty tools and firearms. they are available with varying proportions of glass and carbon-fiber reinforcements, lubricants (molybdenum), and other additives. Mechanical properties depend heavily on both design and manufacturing choices, but a wide array of modeling tools and services are available. 

I recall working with Oerlikon on discarding sabot parts some years ago. At the time their Zurich injection-molding operation was heavily involved in optimization and production of high-velocity textile-loom parts - reinforced nylons. 

In reply toRe: msg 1
tidusyuki

From: tidusyuki

7-Nov

Thanks everyone, what about polymer used to make lower receivers?

I assume they need to be made stronger compared to stocks and grips to be able to withstand the force and friction of the moving parts inside it.

I know HK used to reinforce their grip assembly interior with steel.

But it looks modern polymer lowers is strong enough without any reinforcing. Like SCAR, Bren, APC, and ACR cmiiw.

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