GLOCK 42 Gen3 .380 ACP Subcompact Pistol, 2×6-Rd Mags
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Specs at a glance
About this product
The GLOCK 42 Gen3 .380 ACP Subcompact Pistol, 2×6-Rd Mags is built for one thing: reliable everyday carry without the bulk. At just under 14 ounces unloaded, this slim .380 fits deep in a pocket or AIWB holster and runs on GLOCK’s proven Safe Action system. It comes with two 6-round magazines, a cold-hammer-forged barrel, and a serrated slide for positive manipulation. If you need a backup gun or a primary for deep concealment, this is a straight shooter out of the box.
| Manufacturer | GLOCK Ges.m.b.H. |
|---|---|
| Model | 42 Gen3 |
| Material | Black polymer frame with steel slide |
| Compatibility | GLOCK 42 .380 ACP magazines and accessories |
| Finish | Matte black nDLC slide finish, black polymer frame |
| Weight | 13.76 oz unloaded (per manufacturer specs) |
| Condition | New |
Key Features
- Slim .380 ACP Subcompact Design — At only 0.94 inches wide, this pistol disappears under a T-shirt or in a front pocket. Why it matters: You’re more likely to carry it every day when the gun doesn’t print or dig into your hip.
- GLOCK Safe Action Trigger System — Consistent 5.5-pound pull with three passive safeties. Why it matters: No manual safety to fumble with under stress, and the trigger pull stays the same shot after shot, which builds muscle memory faster.
- Cold-Hammer-Forged Polygonal Rifled Barrel — Increases muzzle velocity and seals gas better than traditional cut rifling. Why it matters: More reliable expansion from .380 defensive loads, and the barrel lasts longer between cleanings.
- Serrated Slide with Front Cocking Serrations — Allows positive grip from either end of the slide. Why it matters: When your hands are sweaty or gloved, those serrations let you press-check or clear a malfunction without slipping.
- Two 6-Round Magazines Included — Gives you 6+1 capacity out of the box with a spare reload. Why it matters: You get a fresh magazine for the range and one for the holster, plus the compact baseplates keep the grip short for concealment.
Who It’s For
This pistol is for the shooter who needs a deep concealment option that still handles like a real gun. It’s ideal for off-duty officers, plainclothes security, and civilians who carry in business attire or summer clothing. New shooters will appreciate the mild .380 recoil and simple controls—no external safety to learn, no decocker to forget.
Pros & Cons
- Pro: Extremely slim and light — one of the easiest .380s to carry daily.
- Pro: GLOCK reliability and aftermarket support are massive; holsters and parts are everywhere.
- Con: The factory sights are basic polymer with white dots — most shooters upgrade to steel night sights for low-light use. Factor in that cost if you carry after dark.
Comparison
| Feature | GLOCK 42 Gen3 .380 | Zev Technologies OZ9 .380 | Agency Arms G42 Custom |
|---|---|---|---|
| Caliber | .380 ACP | .380 ACP | .380 ACP |
| Weight (unloaded) | 13.76 oz | ~15.5 oz | ~14.2 oz |
| Trigger | Safe Action 5.5 lb | Zev adjustable 3-4 lb | Agency single-stage 3.5 lb |
| Price | $417.34 | $1,200+ | $900+ |
| Best For | Reliable carry on a budget | Competition/race gun | Custom aesthetics |
FAQ
What is the magazine capacity of the GLOCK 42 Gen3?
It ships with two 6-round magazines. With one in the chamber, total capacity is 6+1 rounds of .380 ACP.
Is the GLOCK 42 Gen3 good for new shooters?
Yes. The mild recoil of .380 ACP and the simple Safe Action trigger make it easy to learn on. No external safety or decocker to confuse a beginner.
Does this pistol accept standard GLOCK 43 holsters?
No. The GLOCK 42 is slightly smaller than the 9mm GLOCK 43. Use holsters specifically molded for the GLOCK 42 to ensure proper retention and safety.
What is the barrel length on the GLOCK 42 Gen3?
The cold-hammer-forged barrel is 3.25 inches long, giving you a compact slide that still provides adequate velocity for defensive .380 loads.
Can I use +P ammunition in the GLOCK 42?
GLOCK does not recommend +P ammunition in the 42. Stick with standard-pressure .380 ACP defensive loads (e.g., Federal HST or Speer Gold Dot) for best reliability and safety.
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Last updated: April 2026