Smith and Wesson 3000 Factory Magazine Extension Parkerized NOS S&W

Up for sale is a NOS magazine extension for a Smith and Wesson 3000. It looks like it is a 2+, to be paired with an 18” or 18.5” barrel. I don’t own one to test with, it doesn’t fit an 870 magazine thread. Magazine end cap says Smith and Wesson.

Asking $150

Shipping is available or local deal in PG.