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;
- 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.
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