STI Host 4 SS optic right side photoUsers’ Rating (Click a star to rate this gun.)

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Summary: The description, specs, photos and pricing of STI’s HOST SS 4.0 pistol.

Manufacturer’s Description

STI‘s HOST SS 4.0 is a single-stack 1911-style pistol built on a steel frame with a steel slide, and chambered in 9mm or .45 ACP. STI calls it the HOST because it can “host” a suppressor via a threaded bushing barrel and a small classic cut; an optic and/or light via an under-barrel picatinny rail; and an optic via a pre-tapped slide.

Other features include:

  • A 4.15″ barrel with a thread protector;
  • a 4.5-lb. trigger pull;

    STI Host 4 SS optic right side photo
    The HOST SS 4.0 with an optic and light installed.
  • an ambidextrous thumb safety;
  • tall, fixed, tritium, suppressor sights;
  • VZ Alien black gray grips;
  • a Dawson Precision tool-less guide rod;
  • a slim magwell;
  • a black diamond-like-carbon (DLC) finish; and
  •  two magazines with extended basepads.

The Specs

Caliber Capacity BBL OAL Height Weight
9mm 9+1 4.15″ n/a n/a n/a
.45 ACP 8+1 4.15″ n/a n/a n/a

Pricing & Shopping

MSRP: $2,699

More Photos

STI Host 4.0 SS 17_side left photo
The HOST SS 4.0 with just the tall sights installed.

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