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Posted: 8/14/2011 4:16:06 PM EDT
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All:
I am replacing the plunger/plunger spring that holds the buffer and buffer spring back. This weapon is over 20 years old and this is the original. I am curious as to how long these are supposed to last. I am not upset with the longevity of the original, I am just wondering how long these should last. Another question I have concerns the A2 Buttstock. I think that the buttstock being loose may have contributed to my initial problem. Should I use lock tite on the threads once I get it back together again? |
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Here is for the pins and spring sizes,
http://www.biggerhammer.net/ar15/pins.html On the butt stock, pull it and make sure that the receiver extension (buffy tube) is tight to the receiver. Next the tubes for a A1 and A-2 stocks are the same length, but the A-2 stock used a spacer on the end of the tube. If you have a A-2 stock being used, make sure that you have the space on the back of the tube. Part #8 
As for using loctite on the butt stock screw, not really. The factory units have loctite on them, but in a dry form. If you want to use loctite, put it on the screw, let it dry, then install it (will keep it from back off due to the added friction of the dry loctite). Again, if the stock is loose, chances are it's the buffer tube that is loose to the receiver, or the spacer missing in the case of a A-2 stock. Bonding the screw to the tube is just going to end badly since you will need to heat the screw up to remove it most of the time when loctite'd, and with the butt pad being plastic, your going to cook the butt plate or stock in the process. |
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Quoted:
All: I am replacing the plunger/plunger spring that holds the buffer and buffer spring back. This weapon is over 20 years old and this is the original. I am curious as to how long these are supposed to last. I am not upset with the longevity of the original, I am just wondering how long these should last. Another question I have concerns the A2 Buttstock. I think that the buttstock being loose may have contributed to my initial problem. Should I use lock tite on the threads once I get it back together again? The buffer over ran the top of the plunger, and broke off a small piece of the lower reciever maybe 1 to 2 sixteenths of an inch. |
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Quoted:
Quoted:
All: I am replacing the plunger/plunger spring that holds the buffer and buffer spring back. This weapon is over 20 years old and this is the original. I am curious as to how long these are supposed to last. I am not upset with the longevity of the original, I am just wondering how long these should last. Another question I have concerns the A2 Buttstock. I think that the buttstock being loose may have contributed to my initial problem. Should I use lock tite on the threads once I get it back together again? The buffer over ran the top of the plunger, and broke off a small piece of the lower receiver maybe 1 to 2 sixteenths of an inch. If just the center pin on the buffer retaining pin broke, just replace the buffer retainer. The edge of the tube holds the buffer retainer in place (should have the edge of the tube just about kissing the center pin, as it holds the retainer down by seating over it's outer edge, and yes, over time of shotgun'g the upper open and the buffer running into the center pin (buffer is pushed back away from the buffer retaining pin when the upper is closed), the center pin can give up the ghost. 
If it's the buffer retaining pin channel in the receiver that a piece broke away, then that is a strange one, and a Photo of such would help us figure out the problem more in detail. |
| Like UFO,s it docent exist if you don't have pics.......Im sure if you post one we can tell you what to do.......And actually if it got weak you don't have to replace it just stretch it out a little and you'll be fine... Its not going to travel longer than the plunger lets it.... Now the plunger is another story... they wear on the tip or as I call it the nipple and flatten out. Now that is what should be replaced.... |
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