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Posted: 5/13/2010 8:22:49 AM EDT
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First, how is the piston removed from a heavily fouled weapon? Can it be pushed out from the rear? Such as in an FAL, if the fouling were to over come the spring loaded piston, one could push the piston out from the front of the receiver, much like a Sig 55x.
Second, what do you use to clean the gas chamber/gas block? Anyone have detailed pictures? Thanks in advance. |
| I dont have pictures but its easy. I use a cleaning rod and a brass 5.56 jag to push to piston out, theres no spring and the carbon stays on the inside of the piston. Keep a rag on the outside of the sight block to catch the piston as mine pops out onto the floor every freakin time. I use normal carb cleaner form an auto parts store to get the heavy stuff, the go at it with your favorite gun cleaner. I use a small stainlees bruss to clean the piston and it seems to be working very well.... |
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Quoted:
So the only way to remove the piston (if it was stuck because of fouling, etc.) is to use a cleaning rod run through the rear of the receiver. Gotcha. Thanks. You'll still need to gently tap it out from the rear even when there's no fouling, because of the snug fit of the 3 gas rings. It won't just fall out if you tilt it forward. |
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Quoted:
Quoted:
So the only way to remove the piston (if it was stuck because of fouling, etc.) is to use a cleaning rod run through the rear of the receiver. Gotcha. Thanks. You'll still need to gently tap it out from the rear even when there's no fouling, because of the snug fit of the 3 gas rings. It won't just fall out if you tilt it forward. Does FN suggest keeping the rings lubed? Are the gas ports accessable to squirt in some lube if sluggish, like the AR? Anything in the gas plug would be burned off, but what about behind the rings? Thanks guys. Very interested in the rifles operation but just don't know much about them. |
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Try a magnet on the front end of the piston. I use a pretty strong one and it always pulls the piston right out.
Im guessing that if you put 1000+ rounds through it the magnet may not overcome the carbon build up but a little oil or brake cleaner should loosen it up. |
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Quoted:
Try a magnet on the front end of the piston. I use a pretty strong one and it always pulls the piston right out. Im guessing that if you put 1000+ rounds through it the magnet may not overcome the carbon build up but a little oil or brake cleaner should loosen it up. The magnet thing is a great idea, thanks for passing that along. I have knocked out the piston by tapping the barrel on a piece of wood, but I understand that not everyone would want to do that. I'll be trying the magnet. Thanks |
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Quoted:
Quoted:
Try a magnet on the front end of the piston. I use a pretty strong one and it always pulls the piston right out. Im guessing that if you put 1000+ rounds through it the magnet may not overcome the carbon build up but a little oil or brake cleaner should loosen it up. The magnet thing is a great idea, thanks for passing that along. I have knocked out the piston by tapping the barrel on a piece of wood, but I understand that not everyone would want to do that. I'll be trying the magnet. Thanks I tried all kinds of ways to get the piston out before I realized that a good magnet would pull it right out. I was on the verge of beating the gun up to access the piston. So far . So good with the magnet. Gets it out every time. |
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