OP, the FN 49 can have a few issues if it isn't kept clean.
You need to find a mentor to help you with this rifle before doing something foolish.
It is a very robust rifle and has features that were superior to some of its later cousins as well as the Garand. I really like the Garand so I am not belittling it.
This rifle was made to shoot cartridges that are loaded to around 47,000 psi. It will give function problems with the low powered US loaded ammo.
These rifles are also very accurate if the bores are in excellent condition. Recoil is minimal because of the weight.
The rifle is relatively easy to disassemble for cleaning. You should be able to find a video on the internet that will walk you through it visually. The gas system is what takes a bit of care. Especially when using corrosive primed ammo.
The rifle's operation is very similar to the Swede M42. No not exactly the same but he same principle of operation.
The FN 49's gas system is much easier to clean.
FN 49 Egyptian 8MM - Complete Disassembly ... - YouTube
Video for fn 49 disassemblyâ–¶ 24:30
www.youtube.com/watch?v=70pIKvs31a0
Jun 2, 2013 - Uploaded by MosinVirus
In this video I completely disassemble (Detail Strip) my newly acquired FN 49 Egyptian 8MM rifle. I ...
Go to this site.