Educate me on SIG serial# only on trigger assembly

platoonDaddy said:

Shooter this week was showing off his new SIG P365, the only serial number is on the trigger assembly. Per him when the trigger assembly is removed the receiver and slide with barrel per ATF isn't classified as firearm. I find that amazing and hard to digest.

Also learned other SIG models only have the serial number stamped on the trigger assembly.

So is he correct in stating when the trigger assembly is removed, the remaining parts aren't classified as a firearm?

Thinking out loud, have P365 minus the trigger assembly in my carry on briefcase TSA will let it pass through? !!


confused oldMan OUT

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smokey0118 said:

Those types of firearms are designed to be modular. The metal firing assembly is the firearm and you can get different grip frames to nest them in(250 &320). It's pretty sweet for a md resident...you do paperwork once for the trigger assembly and then can purchase different size frames and calibers to have multiple variations of handgun.

Want a subcompact in 9mm to conceal while working out...toss that together. Want a full sized 40 to wear to a pride rally... assemble those components. It's a pretty neat idea.

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HaveBlue said:

The TSA doesn’t allow gun parts in the passenger cabin on planes either. Things that look substantially like guns are likely to get you in trouble. Pistol lowers and barrels would get their attention.

I’m wondering two things after reading this question.

1) What if you tried to take just the trigger assembly on the plane. Probably not allowed but would they notice?

2) if you took the trigger out of the pistol, are you still required to declare that you have a pistol in your checked luggage? It’s not an ATF Firearm. My guess is technically NO. However, the TSA would likely ask you for an explanation.

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GlocksAndPatriots said:

I once shipped a complete AR upper receiver in a checked bag without declaring it as a firearm. TSA doesn't inspect every bag.

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IX-3 said:

It’s not a firearm and it was in your checked bag why would you need to declare it? It’s no different than when I fly and toss my knife in my checked luggage.

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