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Posted: 2/13/2004 6:08:01 PM EDT
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Hi guys, Ive got a question about the lower I just assembled. When I have the trigger pressed, and I push the hammer back so it is caught by the disconnector, then release the trigger, the hammer doesnt always go to the position where it is caught by the trigger. The disconnector fails to let go sometimes. When I let off the trigger, the disconnector keeps hold of the hammer. So when I pull the trigger again, nothing happens. Anybody know how I can fix this? Its almost as if the arm on the disconnector is too long? Also, when I shake the lower, something in the buttstock rattles, is it the buffer, and is it normal? |
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The hammer failing to drop from the disco can be caused by roughness on the middle hammer hool. A light stoning there may solve the problem. There can be other causes but that (and the corresponding surface of the disco) is the first place to check. I know of no other "self locking screw" except for the upper buttstock screw in the fixed stocks. This is a standard FCG you're working on? |
| That is what I had thought about the hammer. I will stone it a little bit and hopefully that will go away. Im not sure what FCG means? A question about the buffer tube.....The instructions say to torque it to 35 foot pounds, but I dont see how thats possible, because you screw it in to a point, and it cant go any further than that. I cant figure out what I would have to torque to 35 foot pounds. Maybe its a typo in the instructions? |
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On the FCG, three areas to watch when you install. The first is that the both hammer and trigger pins have been lubed to allow the FCG parts to glide without binding up on the pins. The second is the trigger spring installs with the loop under the front of the trigger, and the spring legs are down with then resting on the bottom of the receiver towards the front of the rifle. The last is that the disconnector spring is installed with the large coil side down into the back of the trigger channel (this holds the spring in place in the rear trigger groove). Before you start stoning anything, pull the FCG, lube the parts and reinstall them in the lower. My guess is that either the parts are binding due to being installed dry, or one of the springs is installed wrong. In regards to the receiver extension (buffer tube), You start the tube into the back of the receiver, and then install the buffer retainer and spring. Once the threaded section of the lip starts to make contact with the retaining pin, press the pin down and continue to thread the tube over the pin. The end of the buffer tube will retain the buffer retaining pin by resting on the out shelf of the pin. To finalize the receiver extension (tube) install, brace the lower receiver, and torque the receiver extension by using a torque wrench attached to a armors wrench on the back of the tube (the two flats where the butt stock spacer slips over) to 35 lbs. With the rifle completely assembled, the buffer inserts will rattle a bit, due to the tungsten weights used to make the buffer a dead blow device. Chances are, this is what you are hearing when you shake the rifle. |
| I think everyone is "missing the boat" with this rattle sound. The dead-blow in the buffer makes a "thump" sound, not a rattle. I have an A2 stock that rattles too. The rattle is coming from the "secret compartment" door in the A2 stock. It doesn't bother me, so I have not tracked-down exactly what part of the door is causing the rattle. I do know when I tap the door with my finger, it is loose fitting and Not thigh fitting like my other A2 stock doors. |
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Quoted: "secret compartment" door in the A2 stock It's called the cleaning kit compartment. And if you buy one of the cleaning kits for the rifle, and shove it into the compartment, the rattle will go away. P.S. For the most part, the stock cleaning kit sucks, But if you ever have a case stuck in the chamber, or need to clean the rifle out after you drop it in the shit, it nice to have when your away from base camp. |
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