Plastic (Nonmetal) Tubes

[justin]

I suspect this topic has already been addressed, however I cannot seem to find any posts when I search...

If I build a Form 1 can with a plastic tube, front cap, and end cap - is there guidance on how to mark it? That is to say, can I mark the plastic? Do I need to use a metal insert (as Glock, et al does)?

[Capt. Link.]

I suspect this topic has already been addressed, however I cannot seem to find any posts when I search...

If I build a Form 1 can with a plastic tube, front cap, and end cap - is there guidance on how to mark it? That is to say, can I mark the plastic? Do I need to use a metal insert (as Glock, et al does)?

I don't think its a problem as long as the information is inscribed on the tube.I did some experimentation years back with plastics and found the limitations and expense was not worth the effort.

[Bendersquint]

The serial has to be in metal, just like a Glock, M&P, HK, etc... So you would have to embed a metal plate somehow.

[justin]

The serial has to be in metal, just like a Glock, M&P, HK, etc... So you would have to embed a metal plate somehow.

My only question, observation really, is that the polymer lower ARs (mostly .22LRs) are serial numbered in the plastic. Without metal inserts/tags.

[Bendersquint]

The serial has to be in metal, just like a Glock, M&P, HK, etc... So you would have to embed a metal plate somehow.

My only question, observation really, is that the polymer lower ARs (mostly .22LRs) are serial numbered in the plastic. Without metal inserts/tags.

Then they are not legal per ATF. That is why GLocks, HK's. MP15-22's, Carbon 15's all have a metal plate in them, to meet ATF's requirements.

[telero]

My only question, observation really, is that the polymer lower ARs (mostly .22LRs) are serial numbered in the plastic. Without metal inserts/tags.

Which ones? S&W M&P 15-22 is a metal plate embedded in the polymer. TN Arms Co nylon lowers are a metal plate. New Frontier appears to be metal plate.

[justin]

My only question, observation really, is that the polymer lower ARs (mostly .22LRs) are serial numbered in the plastic. Without metal inserts/tags.

Which ones? S&W M&P 15-22 is a metal plate embedded in the polymer. TN Arms Co nylon lowers are a metal plate. New Frontier appears to be metal plate.

Mea culpa. You guys are right on this. Looks like everyone is using a metal plate. I was working under an assumption - I didn't check this out carefully. My .22 AR is the HK416 clone (Walther/Umarex) and it's got an aluminum lower.

Is there a requirement on the metal plates? Beyond 0.0625" high and 0.003" deep for the engraving/ID.

[Capt. Link.]

Is there a requirement on the metal plates? Beyond 0.0625" high and 0.003" deep for the engraving/ID.

Replace one cap with metal and engrave that if its still legal to do so.
You still have a expensive temporary suppressor that took as much money and time as one made in more durable materials.