STI Teams With Costa on H.O.S.T. Pistol

by
posted on June 1, 2017
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
costa-host_lede.png
STI International has teamed up with well-regarded tactical and firearm trainer Chris Costa to design the new Costa series of pistols, starting with an optic-and-suppressor ready gun in 9 mm or .45 ACP.

The Costa H.O.S.T. pistol comes out of the box already fitted with a new Vortex Viper red dot sight. The Viper has a 6 m.o.a. dot and sits high enough to allow co-witnessing with the gun's iron sights. Speaking of which, the Costa gun comes with tall tritium sights that are intended for use when a suppressor is attached to the gun's pre-threaded barrel.

The double-stack 2011 receiver provides higher capacity than a single-stack M1911—18 or 21 rounds of 9 mm or 11 or 13 .45 ACPs, depending on which magazine is used. The company claims, the modular design of the 2011 transfers recoil along a flatter plain for better control and faster follow-up shots. The pistol features a tactical slim magwell and a tan TreeBark stippled grip. Metal parts have a durable Diamond-Like Carbon finish. The Costa H.O.S.T. pistol comes in 9 mm or .45 ACP with a 4.15" threaded bull barrel, two magazines—both 126 mm and 140 mm—Picatinny under-rail and the STI Recoil Master spring system.

MSRP: $3,499

For more information visit stiguns.com

Latest

National Firearm Act
National Firearm Act

150,000 NFA Applications Filed On Day 1 After $0 Tax Stamp Becomes Official

Approximately 150,000 NFA enthusiasts filed their paperwork through ATF’s electronic system in just the first 24 hours of 2026, the first day after the $0 tax stamp for most NFA items became official.

Gun Of The Week: Caracal USA CMP9K

Caracal's CMP9K pistol is based on a design originally produced to replace the aging stock of Heckler & Koch MP5s in United Arab Emirates service.

The Armed Citizen® Jan. 9, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Preview: Roundhouse Provisions Ultimate Campout Kit

Founded by Chuck Norris (yes, that Chuck Norris), Roundhouse Provisions is a company that produces emergency foodstuffs designed to be quickly and simply prepared that will stay fresh for years.

New For 2026: Taurus TX9 Pistol

Taurus launches the TX9 family of striker-fired, polymer-frame pistols, adding to its popular TX series of handguns.

Heavy Browning At War: Combat Tales Of The Browning M1917 Machine Gun

For the first half of the 20th century, one of the most important firearms in the U.S. military arsenal was the water-cooled Browning M1917, known to gunners and infantrymen alike as the "Heavy Browning."

Interests



Get the best of American Rifleman delivered to your inbox.