@JBoyette if the pin that I bought from KNS (flared on one end) fall out or lock up the bolt how does the cut paper clip stay in the BCG?
Thanks,
So a few things.
The only way a firing pin retaining pin affects the operation of a rifle is in three ways.
1. its installed before the firing pin
2. its too long and protrudes through to hinder the installation of the BCG in the upper.
3. Its not captured on the left side and falls through and out the ejection port when the bolt and carrier is in battery.
For point 1.
I have seen many a person install the bolt, cam pin, FIRINGPIN RETAINER PIN, then the firing pin. This is the WRONG sequence. Its such a big deal DOE had it mandated all Nuclear Security officers under the supervision of a ARMOR perform this test.
1. Place the bolt in the unlocked position.
2. Grab the BCG with the bot facing upwards
3. Tap the rear (buffer side) of the BCG on a table
3a. Did the firing pin fall out?
IF YES you installed the firing pin retaining pin too early remove, install firing pin, install firing pin retaining pin and go to step 1.
IF NO
4. place the bolt in the locked position
5. Place your index finger inside the hammer track and press on the rear of the firing pin.
6. Observe the firing pin protruding out of the bolt
You are complete.
To your question, clip the paperclip at a curve 1/2 way, then trim to lenght not to extend past the body of the BCG.