Lower egging prevention

[Offmarksman]

There has been several threads on this, and my Delrin pin has been mentioned before. Kickstand and myself have used these for a few years and have shot thousands of rounds with them. While I don’t plan to make them for sale, I would encourage others to make them. I simply turned down 1/2 Delrin rods to the same dimension as the oem pins (I actually made them a little larger and fitted them to my upper and lower). I maintained thr oem steel spring clip with the Delrin pin.

Equally and possibly more important, I shim my uppers to fit my lowers. There are many methods to do this, but I have found that using furnace tape (multiple layers) until I have a tight fit, has worked very well. I wrap the tape around the top edge of the back of the receiver where the upper slides in (see pic).

 

[Offmarksman]

 

[KickStand]

The one you sent me is a perfect fit in my M11 and M11/9, I really appreciate you giving me one.
I think you actually sent me one that went to the moon thanks to the USPS.

I also hope someone will bring these to market and there’s likely better material out there than Delrin but it’s works great.

 

[Deerhurst]

Crap! Totally got sidetracked on making some for somebody!

Delrin is easy to work with and decently wear resistant. Pins need something hard but softer than the steel.

 

[Galil#1]

Reinforcement tabs for the MAC family, i.e. 10/9mm.
The UZI SMG full size grips have that inside extra metal reinforcement tab around the takedown pin. Rather have these vs. some plastic for such a key pin/structural area etc. IMHO. - Not against plastics an such, Glocks rock right?

 

[Hey...]

Nobody mentions the sear/selector pin but it takes a beating too each time the bolt lands on the sear.

Do this test, with the gun unloaded pull and release the trigger with the bolt closed; notice the sear pin or selector on the other side move as you pull and release the trigger repeatedly?

 

[Galil#1]

^^^^^^^ Yes Exactly always some movement on MAC and UZI I noticed and do push back on. OCD?

 

[SecondAmend]

Anybody know what Battlefield Vegas does? I've read that on their M16s, they have "anti-rotation" pin braces on the hammer, trigger, and sear pins to prevent the receiver from degrading due to damage and wear.

 

[brenbuilds]

I don't have a lathe, but if any of you fine gentlemen happen to produce several Delrin take down pins, I will happily purchase several. I have a very early JAWS Avenger that lack tabs ( all original Hatton/JAWS lowers did not have tabs). Delrin is the engineer's plastic!

 

[Deerhurst]

I'm an engineer. I kinda hate delrin. It's has its uses and is pretty slick. I really like hylarZ but it is a nylon and therefore fairly soft. Extremely wear resistant. I dislike the smell of delrin when machining on it. Smells like glycol.

I'm doing a bunch around my house right now but if I have a chance and some delrin in the chowder box I'll turn a few. Just got some tooling in I want to play with too!