How to deal with Impact barrel locator pin

biohazardman · Jun 5, 2021

Finally decided to do a few things to my gen 1.5 Impact-X as I have an M3 on the way so will not be needing all of the high power mods I did to it. So thought I would dumb it down a little and, while doing so, fix the barrel locator pin problem I have had for awhile.

Need to replace the sear and the loading block pin too as I shot it quite a few times with the loading block open. My Bad!

Probly pull the, modified for higher pressure, Huma reg out and put the stock FX unit back in too as I have a good regulator rod to use now.

OK, how do I deal with this? It looks like I have to drill this pin out of the rear block is that right? Is it just a pin or is it threaded? I don't see it on any of the the FX schematic sheets.

Barrel inlet locating slot getting damaged

Had to tear it apart this far so I could replace the reg as well.

SniperX · Jun 5, 2021

The new barrel transfer ports have a locating slot on top and bottom (180 Deg apart). You may consider just adding anoyher pin in the top hole and upgrading to a new style transfer port.

biohazardman · Jun 5, 2021

That is one way of doing it for sure and I will do that if other things don't come up/werq out. I had already planed on getting a new barrel inlet for my .25 so I will just order a .22 inlet while I am at it. Still the metal is pretty thin up there on top and I would prefer not to rely solely on that.

capefeargunr · Jun 5, 2021

Is the pin too low or the groove worn? It is not threaded. May just have to eyeball it if a new inlet doesn’t help.

biohazardman · Jun 5, 2021

Yes the pin is way to low in the groove.

biohazardman · Jun 9, 2021

The pin is hardened and will not drill out. FX says it is not replaceable and the block is $148.

knifemaker · Jun 9, 2021

Well, FX is wrong. It may not be by the typical home tinker, but anyone with a mill and a carbide end mill the correct size set at high rpm will do the job in seconds.

the more learn about FX, the more I am becoming cautious. Is the gun less than three years old?

Knife

biohazardman · Jun 10, 2021

Double post

biohazardman · Jun 10, 2021

Yes I could see how it could be done but I ground the pin flat and tried with a drill press and had no luck. I can also see that a smallish hole drilled through the bottom of the block and up to the pin could possibly be used to punch the pin out.

My other thought was how does a hardened steel pin, and it is hardened, get broken or smashed down by a piece of brass?

Just found this so looks like I will be needing another part actually two because my .25 barrel inlet is messed up too. So looks like it was not just lately this happened after all there is just to much damage to the two barrel inlets.

Things happen when you are trying to have fun.

I have had it just over three years now.

bigHUN · Jun 10, 2021

I ordered a (spare) rear block on time because a friend of my CNC shop didn't wanted to do a transfer port T-cutter mod (a 7.2mm hole slotted out to 7.5x9.2 mm) on the original piece, so when I got to a point to assemble the power upgrade parts (and I could not pull out the original dowel) I just cut a piece of dowel and throw it in. Not even glue it in just put that pin in loose....can't go anywhere.

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How to deal with Impact barrel locator pin

biohazardman

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SniperX

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biohazardman

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capefeargunr

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biohazardman

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biohazardman

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knifemaker

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