If your Ranger is a bolt action 22, it is likely a Marlin Model 81 made for Sears, and wearing their brand name.
Step 1- open the bolt, and check that there is NO ammunition in the rifle. Do that twice. Then open the bolt, depress and hold trigger, and slide bolt out of the rifle.
Step 2- Remove the large screw on the underside of the stock. You can now lift the action from the stock. The inner magazine tube can be turned, and withdrawn from the outer magazine tube.
STOP. Do not disassemble the rifle further.
How to break down a model 120 or a 140 same as a 1200 or 1500 http://books.google.com/books?id=zRJm6uF7TSIC&pg=PA538&lpg=PA538&dq=THE+WINCHESTER+MODEL+120&source=bl&ots=T-yjfR-FgY&sig=B6_I2ozM1We8WP65r99vZxyQZ90&hl=en&ei=lu1jSsuxL9y_twex4Yn9Dw&sa=X&oi=book_result&ct=result&resnum=1
What Model 51 pistol or a rifle and what model?
You need a gunsmith
Ask a gunsmith for assistance.
Take it to a gunsmith
Ask for help at a gunshop
Best to get help from a qualified gunsmith.
Recommend you ask a gunsmith for assistance.
Ask a gunsmith for help.
Best to ask a gunsmith for help.
You have to hit it with a slede hammer until it breaks down then you've done it
You can get a manual for free from S&W on their website.