The Crosman 120 is a rifle not a gun. It is a break barrel. Cock the barrel all the way down and load a pellet into the rear of the barrel. Pull the barrel back up and it' is ready to fire.
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
Crosman Corp still has the Owners Manual online. See the link below)
You follow the link below to the Crosman website Customer Service section, download the manual for the 140, and read it.
If you are asking about a Crosman Model 760, I suggest you go to the Crosman home page and click on "Download an Owners manual". Crosman still offers the manual on the rifle and not only will you see how to load it but you will also learn other features about the rifle.
See the link below for the Owners Manual.
State the model of the rifle? 126.19320 Answer: Both Crosman and Daisy made Air rifles for Sears under the JC Higgins name. Any model that started with 126 was a Crosman and any model that started with 799 was a Daisy. I believe your model is a Crosman 400 made between 1962-64. Go to the Crosman home page and click on "Download an owners manual". You should be able to find a owners manual and a parts manual there. See the related link
It's a 16 shot BB repeater or a SINGLE shot pellet rifle
It all depends on the model and type of rifle. State the model and ask the queston again. Or go to www.crosman.com and look up the instruction manual. Crosman has them all posted
There are three different versions of the 766 but all three load the same. All load through the oval trap door on the pistol grip. See the link below for the Owners Manual
See the Following Crosman link for the Owners Manual.https://support.crosman.com/hc/en-us/articles/203543210-700-Owner-s-Manual-EVP-1967-1971-
Just under the barrel you will find a large tube with a screw on cap. Open it and slide the 12 gram C02 bottle in nose first. Screw on the cap thumb tight. Do not over tighten. It's ready to shoot. See the link below for the owners manual.