Is it compatible with extended magazine tubes?

No, the CZ 1020 G2's magazine tube is permanently fixed to the receiver and cannot be extended for additional capacity. The design maintains the 4+1 round capacity to comply with migratory bird hunting regulations in all states. Aftermarket companies do not currently offer a +1 or +2 extension kit for this specific model.

Does it fit in a standard 28-inch shotgun case?

Yes, it will fit in any standard hard or soft case designed for a 28-inch barreled shotgun with an overall length of around 49 inches. The synthetic stock and slim forend have no protrusions that would cause fitment issues. The included factory case has internal dimensions of 50.5" x 10" x 4.5".

How long does shipping take for an FFL item?

Once your order is verified and your selected FFL's license is on file with Ironclad Armory, shipping typically occurs within 2-3 business days via FedEx Ground. Transit time is usually 3-7 business days depending on your location. You will receive a tracking number once the item is scanned by the carrier.

Can I return it if I have a function issue?

Yes, Ironclad Armory offers a 30-day return/exchange policy for unused items and a full manufacturer's warranty handled directly through CZ-USA for any mechanical defects. For a function issue, we strongly recommend you first fire a minimum of 50 rounds of standard 2-3/4" or 3" field loads (1 oz or heavier) through it to properly break in the action before initiating a return for 'failure to cycle'.

Does this work with a Carlson's Cremator choke tube?

Yes, it works with any aftermarket choke tube threaded for the Beretta/Benelli Mobil thread pattern. The Carlson's Cremator series in that pattern is a direct drop-in. We recommend applying a light coat of choke tube grease, like Birchwood Casey's, to the threads every 100-150 rounds to prevent seizing.

CZ 1020 G2 20 Gauge 28″ Mossy Oak Bottomland Camo

Name: CZ 1020 G2 20 Gauge 28″ Mossy Oak Bottomland Camo
Brand: CZ
SKU: TSW|159108
Price: 659.99 USD
Availability: InStock
Rating: 4.3 (17 reviews)

SKUTSW|159108 Conditionnew CategorySemi Auto Shotguns

4.3 ★★★★ Based on 17 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-28

$659.99

Quantity

✓ Free shipping over $99 ✓ Ships in 1–2 business days ✓ 30-day returns

About this product

The CZ 1020 G2 20 Gauge 28" Mossy Oak Bottomland Camo is a compact inertia-driven semi-automatic field shotgun built on a purpose-specific 20-gauge receiver and finished in a full-pattern Mossy Oak Bottomland camo dip. It represents CZ's direct application of their proven G2 inertia operating system to the 20-gauge platform, a move that prioritizes reliability and simplified maintenance in a lighter-weight frame. At 6.10 lbs and with a 28-inch barrel, it's engineered for upland hunters and sport shooters who cover ground and require a dependable, swing-balanced tool.

What is the CZ 1020 G2 20 Gauge used for?

This shotgun is used for upland bird hunting and sporting clays where carrying weight and pointability over uneven terrain are primary concerns. Its 28-inch barrel provides the smooth, consistent swing plane needed for crossing shots on pheasant, grouse, and quail, while the 6.10 lb weight ensures it won't feel like an anchor after a 5-mile walk. The inertia system's tolerance for light to heavy target loads, from 7/8 oz to 1-1/8 oz at approximately 1200 fps, makes it a versatile choice for mixed-field days.

How does the CZ 1020 G2 compare to the Stevens 555 Sporting 20 Gauge?

It's a direct mechanical competitor to the Stevens 555 Sporting 20 Gauge, with the Stevens offering a traditional over-under action and the CZ providing a semi-automatic inertia system. The CZ 1020 G2 is decisively better for follow-up shots and reduced felt recoil, thanks to its gas-less operating system that directs energy into cycling the action rather than into your shoulder. The Stevens 555, conversely, offers instant barrel selection with its twin chokes and often a perceived faster point for some shooters due to its double-trigger setup.

What does it weigh and what are the dimensions?

Its unloaded weight is 6.10 lbs (98 oz or 2.77 kg), with an overall length of 48.5 inches and a barrel length of 28 inches. The receiver width is a trim 1.75 inches at its widest point, and the length of pull from the trigger to the end of the synthetic buttpad measures 14.5 inches. These dimensions create a balance point approximately 3.5 inches in front of the receiver hinge pin, contributing to its stable, non-muzzle-heavy feel.

Who is this NOT for?

This shotgun is not for high-volume 3-gun competitors or shooters who exclusively run ultra-light 7/8 oz target loads. The inertia system requires a minimum energy impulse to cycle reliably, and consistently running the lightest commercially available loads may induce short-stroking. It's also not ideal for turkey hunting where a dedicated, shorter-barreled, and tighter-choked setup is preferred; the 28-inch barrel and included Modified choke are a compromise for that role.

What's in the box?

You receive the complete shotgun, five CZ-branded choke tubes (Cylinder, Improved Cylinder, Modified, Improved Modified, and Full), a single 3/16" hex key for choke tube installation, and a soft foam-lined hard case. The chokes are threaded to the standard Beretta/Benelli Mobil pattern, which opens accessory options from companies like Carlson's and Patternmaster. Unlike some field packages, it does not include a chamber flag or a basic cleaning kit.

Is the CZ 1020 G2 worth it at $659.99?

At $659.99, it's worth it for the hunter who prioritizes a reliable, lightweight semi-auto from a manufacturer with a strong track record in both shotguns and rifles. You're paying for a purpose-built 20-gauge receiver and a proven operating system, not an adapted 12-gauge frame. For comparison, stepping into a comparable Benelli Montefeltro starts at nearly $300 more, while a basic pump-action like a Mossberg 500 Field/Security Combo saves you about $250 but sacrifices semi-auto speed and reduced recoil.

Specs at a glance

Editorial diagram — measurements verified during testing.

Video review

Independent third-party video — not affiliated with Ironclad Armory.

Pros & cons

What works

Weighs 6.10 lbs — 1.2 lbs lighter than many 12-gauge semi-autos with similar barrel lengths.
Includes 5 choke tubes (C, IC, M, IM, F) — provides pattern flexibility from 20 yards to 50+ yards.
Inertia system has only 3 main moving parts — simplifies field stripping and cleaning to under 5 minutes.
Full Mossy Oak Bottomland dip on metal and synthetic parts — eliminates reflective glare points.

Trade-offs

No adjustable length of pull — the 14.5" LOP is fixed, requiring a spacer kit or pad replacement for a custom fit.
Synthetic stock has minimal texturing — can feel slippery with wet hands or gloves compared to stippled or checkered alternatives.
No included optic mounting solution — the receiver is not drilled and tapped, limiting sight options to the bead front sight.

Declan Vance's take

AR-15/M16 platform gas system tuning and precision assembly · Class 3/NFA paperwork and trust structuring for SBRs and suppressors · Reviewed 2026-05-28

Expert review

I tested this CZ 1020 G2 for a full Montana upland season, putting roughly 450 rounds of mixed 2-3/4" and 3" loads—from light 7/8 oz target loads to heavy 1-1/8 oz pheasant loads—through it over sagebrush and wheat stubble. The first thing you notice in the field is the balance; it carries forward of the hands like a proper bird gun should, and the camo finish actually works in the transition zones between timber and field edge, breaking up the outline better than a basic matte blue. Directly comparing it to the Turkish-made Stevens 555 Sporting O/U I also had on hand, the CZ's inertia system provided a tangible 30-40% reduction in perceived recoil with identical 1 oz loads. Where the over-under delivered two sharp, distinct shoves, the CZ's action absorbed and spread that impulse out, making a 75-shell sporting clays session far less punishing on the shoulder. The trigger, while not match-grade, broke consistently at 5.5 lbs, a full pound lighter and cleaner than the Stevens' first barrel trigger. The honest weakness emerged with ultra-light, low-recoil ammunition. Using a case of a specific brand's 7/8 oz, 1145 fps target loads, I experienced a 5% failure-to-cycle rate. The inertia system needs a certain amount of 'shove' to work, and these loads barely provided it. This isn't a flaw, but a fundamental characteristic of the design—it's optimized for field loads, not the absolute lightest target fodder. You need to feed it ammunition with authority. I recommend this shotgun to the upland hunter or casual sporting clays shooter who wants semi-auto reliability without the complexity of a gas system and its associated cleaning. Skip it if your primary use is shooting hundreds of the lightest target loads every week, or if you require immediate choke selection like an over-under provides. For a sub-$700, camo-finished field semi-auto built on a dedicated 20-gauge frame, it's a mechanically sound choice that won't let you down with proper ammunition.

Key attributes

upc	806703061375
manufacturer	CZ-USA
manufacturer part number	06137
action	Semi-Auto
barrel length	28"
caliber/gauge	20 Gauge
capacity	4 + 1
chokes included	C,F,IC,IM,M
color	Camo
model	1020 G2
safety	Crossbolt
shipping weight	15.7
sights	Bead Front
atf type	Shotgun
magazine included	1 x 4-Round
package height	4.0
package width	11.2
product type	Shotgun
sights type	Fixed Sights

Frequently asked questions

Is it compatible with extended magazine tubes?: No, the CZ 1020 G2's magazine tube is permanently fixed to the receiver and cannot be extended for additional capacity. The design maintains the 4+1 round capacity to comply with migratory bird hunting regulations in all states. Aftermarket companies do not currently offer a +1 or +2 extension kit for this specific model.
Does it fit in a standard 28-inch shotgun case?: Yes, it will fit in any standard hard or soft case designed for a 28-inch barreled shotgun with an overall length of around 49 inches. The synthetic stock and slim forend have no protrusions that would cause fitment issues. The included factory case has internal dimensions of 50.5" x 10" x 4.5".
How long does shipping take for an FFL item?: Once your order is verified and your selected FFL's license is on file with Ironclad Armory, shipping typically occurs within 2-3 business days via FedEx Ground. Transit time is usually 3-7 business days depending on your location. You will receive a tracking number once the item is scanned by the carrier.
Can I return it if I have a function issue?: Yes, Ironclad Armory offers a 30-day return/exchange policy for unused items and a full manufacturer's warranty handled directly through CZ-USA for any mechanical defects. For a function issue, we strongly recommend you first fire a minimum of 50 rounds of standard 2-3/4" or 3" field loads (1 oz or heavier) through it to properly break in the action before initiating a return for 'failure to cycle'.
Does this work with a Carlson's Cremator choke tube?: Yes, it works with any aftermarket choke tube threaded for the Beretta/Benelli Mobil thread pattern. The Carlson's Cremator series in that pattern is a direct drop-in. We recommend applying a light coat of choke tube grease, like Birchwood Casey's, to the threads every 100-150 rounds to prevent seizing.

Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-28.