This.
"Pistol" marked lowers were manufactured for free-state builds before "Other" was added to the 4473 options around 2008 or 2009.
Before that, the FFL effectively "gave life" to the pistol/rifle status at the time of purchase, and since you can not build a pistol from a rifle, the lowers were marked "pistol" to clarify and keep everything unquestionably legal.
Pistol marked lowers never had a legal purpose in California due to the roster, and California DROS lacking an equivalent of the 4473's "Other"
"Pistol" marked lowers were manufactured for free-state builds before "Other" was added to the 4473 options around 2008 or 2009.
Before that, the FFL effectively "gave life" to the pistol/rifle status at the time of purchase, and since you can not build a pistol from a rifle, the lowers were marked "pistol" to clarify and keep everything unquestionably legal.
Pistol marked lowers never had a legal purpose in California due to the roster, and California DROS lacking an equivalent of the 4473's "Other"





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