Metal rear caps for LTM lenses

[faurefan]

What is the best source for metal rear caps for LTM lenses?

I have a collapsible Summicron, a Summaron 35mm f/3.5 and a Summar 50mm f/2.0.

I only have one metal rear cap between the three lenses, and it only fits on the Summicron when it is uncollapsed. Do I need to get a plastic rear cap for that in order to store it collapsed? If so, does the plethora of Chinese-made generic plastic rear caps fit?

As for the other two, I'm fine to go generic - do people have experience with the Chinese caps that are all over eBay for about $5, and are they fine? Doesn't have to be beautiful, but I'd like something sturdy and with the right thread/pitch.

Thanks in advance for any advice.

 

[gdi]

Heavystar on ebay makes great caps - and he has deep caps. I have a number of his M caps and they are great.

http://www.ebay.com/itm/New-M39-Med...ap-Leica-SM-/361256369788?hash=item541c8ebe7c
http://www.ebay.com/itm/New-M39-Dee...ck-Leica-SM-/361020510482?hash=item540e7fd112

Regarding the cheap chinese plastic caps - I have stripped so many of the M ones that i'll always go metal.

 

[02Pilot]

I've found the Chinese rear lens caps, both plastic and metal, fit reasonably well. The metal body caps often will not screw into the flange all the way, but enough to be secure.

 

[Mojo]

There is a seller in the bay offering lot of (5) 14050 oryfo dust caps. He is also offering lots of black paint brass and early bakelite M 14051 izqoo dust caps.

 

[faurefan]

Thanks all! Grabbed two ORYFO caps from that ebay seller.