first of all it's best to determine the model number. Crosman has most of there manuals, both "Owners and Parts" manuals available to the public. You can post the question with the model number here or look up the parts manual at the link below. The parts manual will help you put the rifle back together..
How do you put WHAT. A pellets in the rifle, a BB in the rifle, Put it back together. your question is incomplete.
Go to www.crosman.com and click on "Download a manual" you will find you rifle there. It will give you an exploded view of the rifle.
See the link below for the parts diagram.
Crosman makes about 50 different '''RIFLES''' you need to state the model you are asking about. See the link below for Crosman rifle owners manuals
See the CROSMAN Link below.
See the link below for the Owners Manual for the Crosman 1077 air rifle
Crosman still has parts for this rifle. contact Crosman at the link below (Customer service) and order the parts you need.
As far as I know the Crosman Phantom is not a BB gun but a pellet rifle. If you want to see the parts list for the rifle then see the Crosman link below.
This rifle was made for Sears using the Ted Williams brand name. It was made by Crosman and is really the Crosman model 160. It was made from 1962 -1971. See the link below for the parts diagram.
Crosman no longer has parts for this rifle. However there are independent shops that repair older Crosman air guns. Crosman offers a free service to locate these shops. see the link below.
That is a question that has a 50/50 chance of each. You would have to state why and what you would be using that for.
Crosman does. see the link below for the parts list and how to contact Crosman.