I'm selling the 20mm to help pay for something else. The 20mm seems to be sold out in almost everywhere for some reason. Anyway, it's in flawless condition, took very good care of it, includes the front and end caps and I have the original box/leaflets if that's something you want. $345 via Paypal. Shipping is free CONUS, other destinations at what the current shipping cost is to the destination. Feel free to PM if there are any questions.