Extractor and Extractor Spring
Now that your bolt-carrier is disassembled, let's remove the extractor.
To do this, you must first remove the extractor spring.
Place your finger on the bolt-face and press up on the extractor. If you can easily move the extractor with little force, you most likely need a new extractor spring.
Insert a small punch (I used 1/16 inch. 3/32 inch should also work, and perhaps a little better than the 1/16) into the loop of the extractor spring. Lift up and rotate the spring.
It should look like this.
Pull the spring out of it's channel, and off of the bolt.
The extractor now will simply lift out of the bolt.
Notice the bent spring.
Here's a visual comparison of the bent Coharie Arms/Black Market Parts spring and the HK factory spring.
Here's a blurry comparison between the Coharie Arms/Black Market Parts extractor and the HK factory extractor.
To install the new extractor and spring, first re-insert the new extractor. It will easily slide into it's channel.
Secondly, insert the new extractor spring in the direction of the arrow. Insert it as it will fit in the extractor (not turned to the side like removal), and with a little bit of force it should snap in.
I will cover re-assembly of the bolt carrier in my next post.
b. Ejector Lever and Spring
Orient your trigger pack so that the charging-handle side is face-up. Note the pivot pin/ejector-level axle is circled in yellow. This is what is holding the ejector lever in place.
From the inside of the trigger pack you can push the axle out (use the tip of a bullet or cleaning rod if necessary). Mine came out very easily. It's a good idea to keep a finger on the rear of the ejector lever to keep the spring from popping out and flaying away, though it may not be necessary.
Note the mushroom shape of the pin. The skinny side (facing up) goes in first.
The ejector lever will now pull free.
This is the ejector spring. I replaced mine. It was probably not necessary, but it couldn't hurt. The spring simply rests in the cavity, and may be pulled free.
Comparison between the Coharie Arms/Black Market Parts ejector lever and the HK factory Generation 3 ejector lever. Note the dimples on the HK factory (they are more visible in a picture below)
Comparison between the Coharie Arms/Black Market Parts ejector lever spring and the HK factory ejector lever spring.
Next we will install the new ejector lever spring and ejector lever.
Simply insert the new spring into the cavity.
Insert the new ejector lever and apply a little pressure to the back to line the holes up.
Remember the mushroom shape of the pivot pin? Insert the skinny end into hole and through the hole in the ejector lever.
Congrats! Your trigger pack is re-assembled. That was simple enough, right?