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Steyr ATC Base 9mm 5″ 20+1 Optic Cut Semi-Auto Pistol

UPC: 815537033458

$2,054.99

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Description

Steyr's ATC lineup was built from the ground up to meet the demands of IPSC, USPSA, and PPC competition, and the ATC Base 5" is where that lineup starts. It's a full stainless-steel pistol with a cold hammer-forged heavy match barrel, milled frame and slide, and the kind of tight tolerances you normally expect to pay a lot more for. The DA/SA trigger runs SA at roughly 17N and DA at 42N, the safety lever doubles as a decocker, and every control on this gun is fully ambidextrous. At around 2.7 lbs empty, that all-steel construction is actually doing something useful by soaking up recoil during longer strings.

What Makes the ATC Base Different From Other Competition 9mms

The ATC Base sits at the entry point of the ATC competition family, which means it shares the same machined steel frame, heavy match barrel, and modular architecture as the more advanced Rock models, but ships with a cleaner, less cut-up slide and a DA/SA trigger instead of the Rock's single-action-only system. That makes the Base eligible for IPSC Production and Production Optics divisions where the Rock might not qualify, and it's already been approved by the IPSC world governing body. The slide comes optic-ready with an adapter plate for Trijicon RMR-footprint red dots, and the adjustable LPA rear sight stays in place when you're not running glass. The Picatinny rail on the dust cover is machined directly into the frame, not bolted on.

Building It Out: Modularity and Ergonomics on the Steyr ATC Base

One of the more underrated things about this pistol is how customizable it is out of the gate. The grip beavertail is interchangeable, the black polymer grip panels come in multiple sizes, and Steyr even releases open-source 3D print files for custom grips if you want to go that route. The removable aluminum magwell can be swapped for a full 360-degree funnel for faster reloads. Two recoil springs are included so you can tune the trigger feel without sending it to a gunsmith. The pistol ships in a hard case with an 18-round and a 20-round magazine, and the magazine release works from either side. For a gun positioned as an entry into the competition world, there's nothing entry-level about what you get when you open the box.

Key Specifications

  • Manufacturer: Steyr Mannlicher
  • MPN: ATC5BASE
  • UPC: 815537033458
  • Caliber: 9mm Luger
  • Action: SA/DA, Semi-Auto
  • Barrel Length: 5" (127mm)
  • Overall Length: 8.5" (216mm)
  • Height: 5.9" (150mm)
  • Width: 1.69" (43mm)
  • Weight (unloaded): Approx. 2.7 lbs (1,200g)
  • Capacity: 20+1 (18-round mag also included)
  • Barrel Type: Cold Hammer-Forged Heavy Match
  • Frame Material: Stainless Steel
  • Slide Finish: Nitrocarburized Stainless Steel
  • Trigger Pull (SA): 17N ± 3N (approx. 3.8 lbs)
  • Trigger Pull (DA): 42N ± 3N (approx. 9.5 lbs)
  • Sights: Adjustable LPA rear, black front post; optic-cut with adapter plate
  • Safety: Ambidextrous manual safety with integrated decocker
  • Magazine Release: Ambidextrous
  • Rail: M1913 Picatinny (milled into frame)

What’s Included

  • Steyr ATC Base 5" pistol
  • 18-round magazine
  • 20-round magazine
  • Optic adapter plate (Trijicon RMR footprint)
  • Two recoil springs
  • Hard carry case
  • Manual

Frequently Asked Questions

Is the Steyr ATC Base approved for IPSC competition use?

Yes, the ATC Base with its DA/SA trigger qualifies for IPSC Production and Production Optics divisions and has already been approved by the IPSC world governing body. Its dimensions with the standard 18-round magazine also comply with the IPSC Standard Division box rule. If you're getting into practical shooting and need a gun that plays by the division rules out of the box, this is worth knowing before you buy.

What's the difference between the Steyr ATC Base and the ATC Rock?

The Rock is the more competition-focused sibling with a skeletonized slide, hand-tuned single-action-only trigger, forward lightening cuts, fiber-optic front sight, and a flared magwell. The Base has a cleaner slide profile, a DA/SA trigger with decocker, and ships at a lower price point. Both share the same machined steel frame, heavy match barrel, and modular architecture, so the Base isn't a stripped-down product, it's just a different configuration that suits certain shooting disciplines and preferences.

Can the Steyr ATC Base be converted from DA/SA to single-action only?

Yes. The ATC series is designed to be modular, and the trigger components are interchangeable to allow a DA/SA pistol to be converted to single-action-only. Steyr offers the appropriate parts through their accessory program. This is one of the things that separates the ATC lineup from a lot of comparable competition guns.

What optics will fit the optic cut on the ATC Base?

The slide comes with an adapter plate for the Trijicon RMR footprint, which covers a wide range of popular micro red dots. Additional plates for other footprints, including the Aimpoint ACRO with its enclosed design, can be ordered separately. When you're not running an optic, the adjustable LPA rear sight stays in place as a cover and backup.

How does the all-steel construction affect how this pistol shoots?

At roughly 2.7 lbs unloaded, the ATC Base is heavier than polymer-framed competition guns, but that weight is intentional. The stainless steel frame and slide dampen the recoil impulse and help the gun track flatter through rapid-fire strings, which matters when you're running a competition stage. The steel-on-steel fit between slide and frame is also machined to extremely tight tolerances, which contributes to shot-to-shot consistency.

What grip customization options are available for the ATC Base?

The black polymer grip panels come in multiple sizes and can be swapped to fit different hand sizes. Steyr also releases open-source 3D print files so you can machine or print custom grips at home if the standard panels don't work for you. The beavertail is interchangeable as well, with optional inserts in different lengths available through Steyr's accessory catalog.

Additional information

UPC

815537033458

Manufacturer

Manufacturer Part Number

ATC5BASE

Barrel Length

5"

Caliber/Gauge

9mm

Capacity

20 + 1

Safety

Ambidextrous

Slide Description

Lightening Cut/Optic Cut/Serrated

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