NRA Gun of the Week: Rock Island Armory STK100

posted on October 22, 2021

The STK100 from Rock Island Armory, the import firm of Filipino company Armscor, offers Glock-style compatibility with enhancements that make it an interesting option in today’s growing list of semi-automatic handguns.

left side black pistol on white background with text on image noting "ROCK ISLAND ARMORY STK100"

Built on an aluminum frame machined with ergonomic elements designed to enhance any shooting experience, the STK100 also incorporates an inner steel chassis, enhancing the gun’s rigidity and providing steel-on-steel contact for the slide assembly. The grip frame is a two-piece unit that clamps around aforementioned steel support system.

left side black pistol handgun trigger gun parts

The slide is machined from 4140 steel and treated with a Parkerized finish, and the gun's aluminum grip frame is treated with a similarly colored anodized finish, which gives an uniform matte-black appearance. There’s also a milled slot in the slide that is compatible with many of today’s micro red-dot sights. Rock Island ships its STK100 with non-adjustable fixed sights.

handgun pistol gun metal parts slide optic plate rear sight with text on image noting "NRA GUN OF THE WEEK"

One of the noticeable benefits of the STK100’s all-metal design was that the added weight made it easy to shoot on the range. Our testers enjoyed the manufacturer’s blend of Glock-style controls combined with ergonomic features that helped to better position the hand for natural aiming, which is a boon to shooters looking for a fast-handling gun for every day work or those who wish to try a hand at the competitive circuit.

Watch our NRA Gun of the Week video above to see the 9 mm STK100 in use on the range.

Rock Island Armory STK100 Specifications
Importer: Rock Island Armory
Action Type: single-action, semi-automatic, centerfire pistol
Chambering: 9 mm Luger
Frame: anodized aluminum
Slide: steel
Barrel: 4.5" steel
Sights: fixed; removable optic plate
Trigger: striker-fired; 5-lb., 4-oz., pull
Magazine: 17-round detachable box
Height: 5.16"
Length: 7.91"
Width: 1.25"
Weight: 28.8 ozs. (empty)
MSRP: $599


Remington 700 Bdl Ihtog 1
Remington 700 Bdl Ihtog 1

I Have This Old Gun: Remington 700 BDL

After Winchester came out with its iconic Model 70, Remington Arms had catching up to do in the sporting-rifle market. Eventually, its answer was the Model 700, a gun that became one of the most recognized bolt-action designs of all time.

New For 2024: EAA Girsan MC9 Disruptor

European American Armory's latest addition to its MC9 handgun line is aptly named, as the Disruptor is intended to provide an incredible range of features at a price point below other similar options.

I Have This Old Gun: Marlin 1894 Trapper

Collectors refer to these shortened carbines as “trappers,” but that term was never officially used by either Winchester or Marlin. Winchester referred to them as “Baby Carbines” or “Special Short Carbines” on the rare occasions when they were cataloged.

The Rifleman Report: From The ''Inside Out''

The term “inside out” can be taken literally or applied as a phrase to describe the thoroughness with which an idea is understood. In this month’s issue, we hope to illustrate that the latter especially is used as a guiding principle to keep the American firearm industry at the top of its game.

Colt CZ Group Makes Offer For Vista's Ammo Brands

Colt CZ Group made an unsolicited proposal to purchase the Sporting Products Division of Vista Outdoor, which includes Federal, CCI, Remington Ammunition and others.

Review: Smith & Wesson M&P9 M2.0 Metal

Firearm trends appear to be a virtual pendulum at times—it isn’t uncommon to see a theme grab hold of the industry only to be reversed entirely some years later.


Get the best of American Rifleman delivered to your inbox.