bladeracer wrote:<<Genesis93>> wrote:I dont see why heat treating is necessary, the mag isn't subject to repeated loading, bending, stress... even the lips contact a softer material.
Because the lips are under pressure of the spring as well as the following round coming up to them as the bolt moves reward.
If the lips aren't strengthened they don't last long at all.
The best way I've found is to cut the feed lips out of billet and just hang a box off that.
No... the steel, even mild steel / carbon steel, formed into the lips [plastic deformed] has a tensile strength that would withstand the relatively insignificant spring force without approaching anywhere near a limit ...my opinion is no heat treatment necessary...but thats only my opinion.






