Norinco 45

[zztop]

Can you provide me with some changes in upgrading parts, and what lb recoil spring is suggested.

Thanks.

[bagsy]

i used 12lb recoil spring

[jekoy]

14 lbs recoil and 19lbs main spring

[Spyros]

Any reasoning behind these choices?

[jekoy]

sir, upon reading some of the post here and tried @ the range i come up of this set up of spring rates what is best for me. 19lbs main spring i think can handle even the hardest primer and 14lbs recoil is recommended for 1911 model. my 2 cents. as of now i have no problem encountered yet in FTE and FTF.

[Spyros]

Firsti of all thank you, it's always good to have an explanation on why you're recommending something to people.

But actually, the stock rate for a 1911 pistol with a 5" barrel and chambered in .45 Auto is 16lbs, not 14 - although it is true that the original rate, resulting from the original M1911 specs, would be closer to 14. Either way, I don't know of a single, current 1911 manufacturer that recommends a 14lb recoil spring for his pistols.

As for the mainspring - yes, a 19 or even a 17lb spring would probably work fine and it might even offer a small reduction in trigger pull weight, too. It would also allow the pistol to unlock faster from battery. That may be desirable to some, like those with lightened competition slides, in Open-style guns chambered for fast calibers, while others (like me) would point out that the stock 23lb part, combined with a small-radius firing pin stop, would reduce felt recoil in an otherwise box-stock .45 auto 1911. Check for the sticky threads in the gunsmithing secton for details on that, if you like.

In any case, since this pistol seems to have been purchased used, it would be a good idea to change all springs anyway - cheap insurance.

[jekoy]

sir, thank you for a well said explanation. i will check it in the gunsmithing section. also, im planning to install as what you said the small radius firing stop. lots of expert here said including you about the effect of this small parts to be change for a more less recoil. is it still ok to change my firing pin stop with my existing spring rates?

Thank you.

[Spyros]

I'm no gunsmith, but there's plenty of advice available on the subject in the Gunsmithing section.

This is a good place to start:
http://forum.m1911.org/showthread.php?t=13060

[John]

Jekoy, the pistol is a system. Drift away from one parameter of the system and the whole system can go south. Use the suggested springs, the people who suggest them know what they are talking about.