Your best bet is to contact Crosman Directly. They would have the best answer. Go to: (See the attached link below)
CROSMAN 2100 You can find CROSMAN Parts and manuals at ( see the link below) This should give you a diagram on how to dissamble a crosman 2100.
Crosman still has parts available for this model. See the links below for the parts manual and Crosman customer service.
Crosman offers a free service to locate shops that repair older Crosman products. See the link below.
Contact Crosman. Email them. They should be able to help.
ehh, seriously, just forget about crosman and look into UTG
You can find one from Crosman. They still have parts for this model. See the 2 links below.
I don't know if this will help by I would contact Crosman directly and ask them. (See the link below for Crosman contact page,)
You can find all the new models and prices on the Crosman home page.
See the link below you will find all the Crosman rifles manuals there.
Crosman offers a free service to locate repair shops that repair older model Crosman airguns. see the link below.
Crosman has the information online. See the link below
The Crosman home page has a place for you to "download owners manuals" and parts list. You will find the link on the Crosman home page at the bottom of the page. See the related link