M1 Carbine trigger assembly
Before I begin talking about the carbine trigger group safety needs to be addressed
- Fieldstrip the rifle. If you don’t know how go here. The trigger housing assembly has spring-loaded parts under compression. Wear Safety glasses and be sure you know where the parts if they become airborne are going to impact. (Preferably someplace safe and not in your eye or anyone who might be watching.)
- Since some of these parts are under a lot of spring compression, most notably the hammer spring they are very easy to lose after they become airborne because you didn’t have them under control. I recommend if you’ve never torn one of these down to be very deliberate and cautious and do the teardown on a cookie sheet with a tee shirt on it so you can control the parts and see them.
I would suggest you read through this before you proceed. Be sure of what it is you want to do before starting. That way when you are done you’ll have the trigger housing apart and back together without having to visit your gunsmith with a shoebox full of parts and lame excuse of how your dog ate your homework, or in this case why you messed up.
Here is an exploded drawing of the trigger housing assembly.
A. Trigger housing B. Safety C. Magazine release. D. Magazine release spring E. Magazine release spring plunger
F. Safety detent plungers(2 of them) G. Safety detent plunger spring. H. Hammer spring J. Hammer spring plunger
K. Hammer L. Hammer pin M. Trigger N. Trigger Spring O. Sear P. Sear spring Q. Trigger Pin
To begin detail stripping the trigger group, first place the safety in the fire position.
Next, while holding the hammer so you can control it pull the trigger. The hammer will go to the fire position.
When you rotate the trigger housing you will see the cutout where the hammer spring plunger has to clear to remove it from the housing.
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