An Italian manufacturer of sights. They have a wide variety of asjustable sights for your M-1911. Available with a variety of blades. See below for details:

TPU Series

Adjustable rear sights for a variety of pistols, including your M-1911.

SPR Series

Front and rear sight combination for the M-1911s. Micrometric adjustment for windage and elevation provided by hardened click screws. Taperde dovetail for a strong locking in the existing groove. Allen wrench and adjustment screwdriver inclided in the package.

TR Series

Same features as the SPR series, but it works with the standard front sight.

TRT Series

Same features as the SPR series, but it works with the standard front sight.

SPF Series

Fixed sights for the M-1911.