Are the gearheads for stihl FS55 and FS56 interchangeable?

What is value of western field 22 pump rifle? I have a Herbert Schmidt 22 cal Double action Revolver 8 shot it has Germany on barrel and three small stamps on the side one is a small shield with the 63 in the shield what is the value of this gun? What is the value of a Crosman 622 in fair condition? What is the value of a Harrington and Richardson M16 A1? How much is a 6.555 worth? What is the value of a Smith Wesson 38 special patented Feb 06 06 Sept 14 09 Dec 29 14 with serial V241602 model is 84981with a B stamped above the number? How old and how much for a browning light twelve made in belgium serial 4g31095 29.5 inch barrel has one star and says browning arms st Louis and Montreal special steel 12 ga shells 2.75 inch ok cond? What is the value of a pearl handled nickel plated 38 Llama? How do you find the date of manufacture on a charter arms off duty 38spl? What does AK mean in AK-47? Where in Richmond Virginia can you buy a browning A5 light 12 shotgun? How much is your American Waltham pocket watch serial number 4788765 worth? What does it mean to have TGGC stamped on my silver ring? What is the difference between 22 short and 22 long? How much lead is in a 40 cal bullet? What gun is this Browning 82764? Can you carry your gun in a store? Where can I find a Cooey Model 64B magazine made of plastic? Do you have an assembly diagram for westernfield xnh-565-b 12 gauge? What was the date of manufacture of Colt 1911A1 serial number 779886?