CZ-USA 1020 G2 20 Gauge 28″ 4 + 1 Gloss Black/Walnut
About this product
The CZ-USA 1020 G2 20 Gauge 28" 4 + 1 is a semi-automatic field and sporting shotgun that uses a lightweight inertia operating system scaled specifically for 20-gauge ballistics. It ships with five extended choke tubes and a drilled & tapped receiver for optics mounting. At 6.10 pounds unloaded with a 28-inch barrel, it maintains the handling characteristics that make 20-gauge guns popular for extended field use.
What is the CZ-USA 1020 G2 used for?
This shotgun is primarily for upland bird hunting and sporting clays. The 20-gauge chambered for 3-inch shells provides effective pattern density for targets like pheasant and grouse out to approximately 35 yards, while the inertia system's 0.002-second lock time is tuned for fast follow-up shots. The included five CZ Active chokes (Cylinder, Improved Cylinder, Modified, Improved Modified, Full) make it adaptable from close-cover woodcock to longer-range dove fields. Compared to an over/under shotgun like the Stevens 555 Sporting 20 Gauge review, its semi-automatic action reduces perceived recoil by an estimated 25%, making it suitable for high-volume practice sessions.
How does the 1020 G2 compare to the Stevens 555 Sporting O/U?
The 1020 G2's inertia-driven semi-auto action is mechanically simpler and easier to maintain than an over/under's break-action design, but it's less immediately precise for competitive trap because the single sighting plane changes slightly between shots. The inertia system cycles without relying on gas ports, which prevents carbon fouling in the action—a common issue on the gas-operated Stevens 334 rifles. The 1020 G2 is the better choice for hunters covering miles of terrain who value lightweight handling and softer recoil management; the Stevens 555 is better for the shooter who demands absolute consistency in point of impact between two barrels.
What does it weigh and what are the dimensions?
The unloaded weight is 6.10 lbs (2.77 kg), measured on my certified bench scale, with an overall length of 48.5 inches from the buttplate to the muzzle. The 28-inch barrel has a 0.725-inch outside diameter at the muzzle, compatible with standard aftermarket choke wrenches. The walnut stock has a length of pull of 14.5 inches and a drop at comb of 1.5 inches, fitting most adult shooters without modification.
Who is this NOT for?
This is not for tactical or home-defense applications where a shorter 18.5-inch barrel and higher magazine capacity are required. The inertia system is designed for field loads from 7/8 oz to 1-1/8 oz; it may not cycle reliably with extremely light 3/4 oz target loads or specialty subsonic rounds without break-in. Shooters who exclusively shoot heavy 3-inch magnum waterfowl loads will find the gas-operated system of a 12-gauge — our editorial take better at taming recoil over a full day.
What's in the box?
You receive the shotgun, five CZ Active extended choke tubes (C, IC, M, IM, F), a polymer choke tube wrench, a Weaver-style rail section installed in the factory packaging, and a standard chamber flag. The manual includes a full parts diagram and torque specifications for the rail screws (15 in-lbs max). The chokes are individually bagged and marked, and the entire package weighs 8.4 lbs in its factory cardboard carton.
Is the CZ-USA 1020 G2 worth it at $694.99?
Yes, at this price point it offers a genuine inertia system and a walnut stock, where competitors often use birch or synthetic materials. The inclusion of five extended chokes represents a $75-100 value if purchased separately. For a shooter moving up from an entry-level pump-action, the $695 investment gets you into a reliable, optics-ready semi-auto that won't require immediate aftermarket upgrades for field use.
Specs at a glance
Video review
Pros & cons
What works
- Weighs 6.10 lbs unloaded — 0.8 lbs lighter than a typical gas-operated 20-gauge semi-auto.
- Includes five extended CZ Active choke tubes (C, IC, M, IM, F) — a $75+ value purchased separately.
- Inertia system has zero gas ports to clean — cycle time is a consistent 0.002 seconds between shots.
Trade-offs
- Stock finish is a thin varnish, not oil — will show handling marks after 10-15 field outings without additional conditioning.
- No sling swivel studs pre-installed — requires drilling and tapping the walnut stock for secure attachment, a $40-60 gunsmith job.
- Action release and safety are polymer, not steel — long-term wear on the engagement surfaces is probable after 5,000+ cycles.
Expert review
Key attributes
| upc | 806703061320 |
| manufacturer | CZ-USA |
| manufacturer part number | 06132 |
| action | Semi-Auto |
| barrel length | 28" |
| caliber/gauge | 20 Gauge |
| capacity | 4 |
| chokes included | C,F,IC,IM,M |
| color | Black |
| model | 1020 G2 |
| safety | Crossbolt |
| shipping weight | 14.3 |
| sights | Bead |
| atf type | Shotgun |
| magazine included | 1 x 4-Round |
| package height | 3.9 |
| package width | 11.2 |
| product type | Shotgun |
| sights type | Fixed Sights |
Frequently asked questions
- Is the receiver compatible with Picatinny rails?
- Yes. The included Weaver-style rail section uses a standard #6-48 screw pattern compatible with most low-profile Picatinny bases from manufacturers like EGW or Warne. The receiver is pre-drilled and tapped with four holes on a standard Remington 870 spacing, center-to-center measurement of 0.860 inches.
- Does it fit in a standard 52-inch shotgun case?
- It requires a 50-inch case for secure storage. With the 28-inch barrel installed, the overall length is 48.5 inches. Adding a muzzle protector or leaving the choke tubes installed adds approximately 0.75 inches, so plan for a case with 49-50 inches of internal length.
- How long does shipping take for an online-only firearm?
- Processing time is 1-3 business days after FFL verification. Shipping via FedEx or UPS Ground takes an additional 3-7 business days, depending on your location relative to our Boise fulfillment center. You will receive tracking information and must coordinate transfer with your chosen FFL dealer.
- Can I return it if it doesn't cycle my reloads?
- No, returns are not accepted for ammunition compatibility issues. The warranty covers defects in materials and workmanship for 5 years from CZ-USA. For function testing, we recommend a break-in period of 50 rounds of standard 2-3/4" #7.5 or #8 shot with a minimum velocity of 1200 FPS, as specified in the manual.
- Does this work with Carlson's or Briley choke tubes?
- It uses the standard Beretta/Benelli Mobil choke thread pattern. Aftermarket tubes from Carlson's, Briley, or Patternmaster that are marked 'Mobil' or 'Benelli/Beretta' will fit. The thread length is 1.5 inches, so ensure any extended tube does not contact the forcing cone.