Any help with Sig history on RCS?

I just bought my first 1911, .45 Auto, of course. It was manufactured in May 2008. Per a Sig sticker on the blue plastic case, it is a 1911 RCS 4 inch Nittron. The manual which came with it has specs for for three models : Full Size, Carry, and Compact. Using the measurements, mine is the Compact. However, the weight listed is 2 oz. higher than what I get from my scale, Sig says 30.3 oz empty /w.o mag. I get 26.8. The website shows this gun but the slide is engraved RCS mine isn't. My manual says 6 round mags (2) but the sticker says 7 rounds. So what's going on here?

CORRECTION: the slide is marked RCS

[O'Dell]

Originally Posted by Rainman48314

I just bought my first 1911, .45 Auto, of course. It was manufactured in May 2008. Per a Sig sticker on the blue plastic case, it is a 1911 RCS 4 inch Nittron. The manual which came with it has specs for for three models : Full Size, Carry, and Compact. Using the measurements, mine is the Compact. However, the weight listed is 2 oz. higher than what I get from my scale, Sig says 30.3 oz empty /w.o mag. I get 26.8. The website shows this gun but the slide is engraved RCS mine isn't. My manual says 6 round mags (2) but the sticker says 7 rounds. So what's going on here?

My SIG 1911 is a C3. It has a 4.25 inch barrel and SIG list the weight as 29 ozs with mag, so 26.8 sounds about right w/o the mag. I know it's a bit heavier than my two 3" 1911's and they weigh about 23 ozs.

Any idea on how to dissassemble this mag? It doesn't match the style in the manual. Mine does have RCS engraved on the slide. I sent an email to Sig asking to clarify the mag capacity. I can easily load 7 rds in one mag. The second mag is much harder to load 7. The empty hole with 6 loaded suggests its a 7 round mag. The case sticker says 7, manual says 6.

[O'Dell]

Originally Posted by Rainman48314

Any idea on how to dissassemble this mag? It doesn't match the style in the manual. Mine does have RCS engraved on the slide. I sent an email to Sig asking to clarify the mag capacity. I can easily load 7 rds in one mag. The second mag is much harder to load 7. The empty hole with 6 loaded suggests its a 7 round mag. The case sticker says 7, manual says 6.

I looks just like the ones for the C3, but mine say 45 ACP. It is a seven round mag, BTW. I don't have a clue how to disassemble it, because I've never tried. Why bother if they work?

Nice looking pistol - it looks to be the same size as mine.

Originally Posted by O'Dell

Why bother if they work?

But they don't work on the last round. I'm getting more mags but might re-spring these. You can get a Chip McCormack kit with followers and springs OR go to Wolff and get just springs.

This gun carries real well. I notice the weight difference from my HK P7 and pleased with the Galco my instructor sold me.

[Bawanna]

Some mags just don't come apart. I can't say for certain on the Sig. They are just welded and no taking the bottom plate off.

Nice looking gun for sure. I see Sig is using the external extractor with success as did Smith & Wesson, wonder why Kimber couldn't make it work?

Originally Posted by O'Dell

It is a seven round mag, BTW. I don't have a clue how to disassemble it, because I've never tried. Why bother if they work?

Nice looking pistol - it looks to be the same size as mine.

I talked to Victoria at Sig CS. She confirmed a running change from 6 round to 7 round mags. I found thru the net that Checkmate makes these for Sig. I confirmed on the CheckMate website that their products have the same patent number too. I am respringing mine and going with a dimpled follower. These alledgedly solve the last round FTF problem. I will end up with two good factory mags and probably two Wilson Combat.

A forum, member did a nice video for us and used ammo to hold the spring back and a punch restrain it. I used a toothbrush handle and a shish kabob skewer to fix mine. Cleaned them and lightly polished under the lips. Going to shoot them once more before I rebuild them.

[O'Dell]

Originally Posted by Rainman48314

I talked to Victoria at Sig CS. She confirmed a running change from 6 round to 7 round mags. I found thru the net that Checkmate makes these for Sig. I confirmed on the CheckMate website that their products have the same patent number too. I am respringing mine and going with a dimpled follower. These alledgedly solve the last round FTF problem. I will end up with two good factory mags and probably two Wilson Combat.

I forgot to mention the dimpled follower. Both of mine have it, and it does reportedly solve the last round feeding problem.

[gb6491]

Originally Posted by Rainman48314

Any idea on how to dissassemble this mag?...

I was going to explain the procedure to remove parts from a fixed base plate magazine, but figured a short flick might be better. Sorry about the dirty hands, I shot this on a quick (well not so quick) break from some yard work:
http://www.youtube.com/watch?v=8hbugQpTRE8
Regards,
Greg

Originally Posted by gb6491

I was going to explain the procedure to remove parts from a fixed base plate magazine, but figured a short flick might be better. Sorry about the dirty hands, I shot this on a quick (well not so quick) break from some yard work:
http://www.youtube.com/watch?v=8hbugQpTRE8
Regards,
Greg

Thanks, Greg. I just completed cleaning, inspecting and polishing my two Sig mags (made by Checkmate). My tools were not the same as yours but worked. I commented to the YouTube vid. Appreciate the help and hope to return the favor one day.

Ray