M1a won't cycle

[bratch]

I recently picked up a Polytech M1a and took it to the range for the first time today. I was shooting Portuguese 7.62x51 with a 92-11 headstamp. The rifle would not cycle and eject the ammo. The bolt didn't appear to move at all.

Help; ideas; suggestions?

 

[lipadj46]

make sure your gas valve is turned on

 

[wcwhitey]

Yup Gas Valve!

 

[bratch]

I'm gonna feel like a dope if its that simple. I didn't realize M1as had a gas valve that can open/close.

Thanks guys.

 

[lipadj46]

It is the most obvious. The only other thing I could think of is if there is no piston in the gas cylinder but it is probably the spindle valve in the wrong position.

 

[bratch]

Any tips on getting the gas cylinder plug out? I've used all my Herculean strength and it won't budge.

 

[lipadj46]

a wrench or a combination tool should do it. Use a wrench with a pipe on it for a bit more torque, also use some of liquid wrench. My SAI plug was on there pretty tight.

 

[longdayjake]

um you dont need to take the plug off to turn the gas valve.

 

[bratch]

um you dont need to take the plug off to turn the gas valve.

I wanted to get it apart and clean it since I'm not sure when it was last cleaned.

Mission accomplished on the plug.

 

[lipadj46]

Yes it is a good idea to make sure the gas vent hole is not plugged up as that could do it too.