The hole in the back isfor a cleaning kit that may or may not be there. Try sticking your finger in. Then, after getting it stuck, learn how not to do that.
The cleaning kits are more bother than anything else. They cause a 'twanging' noise in there, and the brushes are usually worn beyond use. The rod on the gun is too short for adequate cleaning too. Still, lots of guys like having the accessories, just to be complete. :nod:
Here's THE SITE for excellent SKS info. http://www.simonov.net/information.htm
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