You need to state the condition of the pistol in order to get an estimate of value.
Crosman sells parts for the 1377. contact Crosman customer service. see the link below.
If you are referring to the Crosman 1377 air rifle it can still be repaired by Crosman airgun. Contact Customer service at www.crosman.com.
As far as I know Crosman has made a 1077 rifle and a 1377 pistol, but never a 1177 model that I know of. However Crosman offers a service to locate repair shops that repair older air rifles. See the link below.
Because of the way the 1377 is designed it is not possible to easily attack a laser sight to the pistol underneath. There are a few custom shops that manufacture a custom breech that is longer than the stock breech. Crosman even offers one. You might be able to attach one there. I've attached a scope to one of the 1377's using Crosman part (459MTC) it a Crosman Airgun intermount for scopes. Click on the link below to see the Crosman accessories.
See the CROSMAN Link below.
This air rifle was made by Crosman air gun company. In reality it is a Crosman model V350. Crosman has the parts manual online See the link below. Crosman also offers a service to locate shops that repair older Crosman air rifles.
it would be worth somewhere around $45. Source Bluebook of air guns 9th edition.
Crosman does. see the link below for the parts list and how to contact Crosman.
The Revelation brand was made by Crosman Air gun. Crosman offers a free service to "Find a service center" on their Crosman home page. It will give you the location of several places that repair Crosman air guns. See the related link.
Crosman offers a service to locate repair shops that repair older Crosman air rifles. See the link below
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.
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.