SIG SAUER | 1911 Magazine | 45 ACP | Black

SIG machines its 1911 magazine tube from precision stainless steel with a removable steel baseplate, paired with a stainless follower and high‑tensile wire spring for the kind of consistent cartridge alignment a 1911 actually needs to run reliably. Numbered witness holes give an at‑a‑glance round count, and the extended polymer baseplate makes insertion and extraction easier even through a magwell. Manufactured to tight tolerances specifically for SIG's own 1911 Full‑Size and Carry models, not a generic 1911‑pattern magazine hoping it fits.