Why was the cap gun invented?

How can you trace the serial number of a pistol? What is the value of an Iver Johnson 22 cal target pistol It has a number stamped on the side that is J 56765 and it has Fitchburg Mass Model 57A It has an owl head stamped on the handle? Is the titan fie 380 a reliable weapon? What is the value of a ruger blackhawk old model 357? What is the value of a Savage Model 99 300 lever actionwith case and an inerchangeable 410 barrel? What is value of 1958 browning 22 semi automatic rifle made in belgium? Mossberg model 152 22 long rifle what is the value? What is the age of a utica firearm double barrel side by side 12 gauge double trigger double hammers sold by simmons hardware company? Who made sears rifles? What is 4 B of C in a J? What is the year of manufacture for a Browning 12 Ga BT-99 Shotgun 47D23889? What is a 30-30 caliber? What is the age of a western field model M855a rifle? How old is a monarch machine gun double barrel shotgun serial 37504 Barrel number 8902 and worth? How much is a MOD GT 27 PAT CAL 25 ACP? How do you transfer title of a gun from Virginia to Pennsylvania? What year is your 94 Winchester serial? How much money did Garrett Morgan receive from the gas mask? Where do you find info on a Montgomery Wards wards model 84Z407RA hacksaw? Who made 38 parallel?