Wheream_I t1_ivsfbbg wrote
Reply to comment by rickyh7 in 3D-printed weapons: Interpol and defense experts warn of ‘serious’ evolving threat by mossadnik
I just went and looked at my S&W M&P 2.0 and woulda look at that. The polymer “lower” (lowers don’t apply to handguns, only rifles like the AR15) isn’t serialized, but the metal slide is.
This is because the polymer “lower” only houses the magazine, the trigger, and some basic stuff. Everything that makes the gun go bang is on the metal slide
rickyh7 t1_ivsh5c1 wrote
You’re right I should have been more clear. It’s a lower in a rifle, and a frame on a pistol. Functionally they serve a similar purpose and neither of them have the equipment that makes a gun go bang (just trigger, mag well, some pins maybe springs). Regardless, per ATF 27 CFR 478.92 the serial number must be conspicuously marked on the frame or lower receiver of the firearm (US only not sure for rest of the world). What you’re seeing on the M&P 2.0 might be the rest of the required markings which can go on the slide but there is still a serial number on a metal piece which is embedded in the frame on the right side of the gun just below the slide! If you take the slide off that piece will stay behind
Wheream_I t1_ivskg78 wrote
Holy shit you’re right… just noticed it on the frame in a TINY window, next to what looks like a QR code, separate from the slide. How tf did I NEVER notice this??
I always thought the ATF considered the slide as the pistol, but I guess they consider the receiver the pistol. That’s surprising to me
HighPlains_oath t1_ivynzzg wrote
You and the guy above have the same avatar so I was super confused for a second hah.
Frame is the firearm, or at least whatever holds the trigger, I am sure the atf has some legal nonsense that specifically defines this, but that is mostly it. You can buy after market slides all day long.
Though, some pistols, like one of the sigs. Actually use a "chassis" as the legal identifiable part. It's not the "grip" portion of the pistol per se, but instead they have a separate mechanical assembly that holds the trigger and slide rails, independent of the grip. this fits into the polymer grip of the sig. That's about the only pistol that I know is a bit different
SouthEasternGuy t1_ivzul20 wrote
People use this law to their advantage by having 1 lower receiver or frame that they like but buying many different uppers/slides for their pistol or rifle. This way, they can have very different setups for whatever they feel like shooting but officially owning just “1” gun
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