How to Remove Gas Assembly From a Fn49 In 30.06 Rifle?

How to Remove Gas Assembly From a Fn49 In 30.06 Rifle?
Brownells Gunsmith Corner

Brownells Gunsmith Corner

Question: I’m trying remove the gas assembly from an FN49 in 30.06. I can’t get the pin in the gas assembly out. I’m also trying to take off the gas assembly on another FN49 and have the pin out but the assembly won’t move. Which punch set would be the best to try (have already broken one punch on this) and how do I get the gas assembly off? In the firearm’s disassembly book I have, the chapter on FN49s has this in one step: take out the pin in the gas assembly and remove the gas assembly. At the moment, I have the end caps off both barrels and I want to switch the gas assemblies from one barrel to the other, both in 30.06.

Gunsmith Professional Punch Set

Answer: If you’re trying to remove the entire sight base you may need to drill out the pins and replace them for the next barrel. They do not often come out cleanly. If you are working on the gas tube that goes into the sight housing, the whole assembly could be rusted together due to corrosive ammunition used on the past. Those parts would need to be soaked in penetrating oil for a few days to get them to free up. Even then you may have to resort to drilling the pin out if there is corrosion present. As far as Gun Tool Punches go, be sure to us a starter punch in the beginning until you are sure the pin is moving. Then switch to a standard punch.

— Steve Ostrem, Brownells Gun Tech

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