Gunsmithing Custom thread protector

[Jeffd]

Need your help please. I am looking for 3 M18X1.5 thread protectors for my AI rifles and there are none to be found at dealers. Anyone know where I can purchase them?

 

[bkincaid]

Doesn't say if in stock or not though:
https://www.eurooptic.com/Euro-AI-Mz-Thread-18X15-PB-Eurooptic-muzzle-thread-protector.aspx

 

[Jeffd]

Doesn't say if in stock or not though:
https://www.eurooptic.com/Euro-AI-Mz-Thread-18X15-PB-Eurooptic-muzzle-thread-protector.aspx

Not in stock but thanks anyway!

 

[Gene Poole]

M18x1.5 is the standard for O2 sensor threads. They make bungs for custom exhaust headers. You may find something searching for these.

https://www.ebay.com/itm/291828767122

Apparently the AI uses different dimensions that standard AAC dimensions. Do you have a print or know what the dimensions are for your barrels? I'd be happy to make you some for free if you don't mind a wait. I've been tooling up for metric stuff and M18x1.5 is on my TODO list.

 

[LRI]

We can make anything you might need. Happy to help.

 

[Waorani]

We can make anything you might need. Happy to help.

How about some M30x2 AXMC barrel tenon protectors? I'd be in for a few.

 

[LRI]

How about some M30x2 AXMC barrel tenon protectors? I'd be in for a few.

Delrin or AL?

 

[Waorani]

Delrin or AL?

I'd prefer aluminum but if there's some advantage to delrin that might be ok too. Any concern about susceptibility of delrin to damage from cross threading? I know there's a few others that have also been looking for AXMC tenon caps.

 

[Gene Poole]

I make these with a 3D printer. ABS, PLA or PETG:

 

[Gene Poole]

 

[Gene Poole]

I can't find a print for AI muzzle threads, but I was able to glean some information from some other forum posts. I threw together a print from this info. Any corrections or other information is greatly appreciated.

 

[Jeffd]

Thanks to everyone for the help. I finally found them at Pacific Tool and Gauge.

 

[bohem]

Thanks to everyone for the help. I finally found them at Pacific Tool and Gauge.

Wish I'd seen this earlier, sorry. I have M18 x 1.5 and M18 x 1 on the shelf in a bin. They go out standard with AI and TRG barrels ordered with those muzzle threads.