Description
Buying one shotgun that can pull double or triple duty is a smart move, and that is exactly what the Rock Island Armory Meriva 3-in-1 was built for. In the box you get a pump action 12 gauge receiver with two chrome barrels: an 18.5-inch cylinder bore smooth barrel that keeps things short and quick handling, and a 28-inch vent rib barrel that swings the way a field gun should. Toss in the included pistol grip and you have a third configuration when you want the whole package as compact as it gets. Barrel swaps take just a few minutes with basic hand tools, so switching from clay days to nightstand duty is no big project.
What the Meriva 3-in-1 Brings to the Table
The receiver wears a marine chrome finish over aluminum, which shrugs off moisture and wipes clean easily, a nice touch if this is going to live in a truck, a boat, or a duck blind. The 3-inch chamber handles everything from light target loads up to heavy magnum shells, and capacity runs 4+1. A bead front sight keeps the sighting picture simple, the black synthetic stock and forend hold up to weather without babying, and sling swivels come standard. The whole gun weighs in around 6.2 pounds with the short barrel, so it carries easily and points fast.
Chokes and Setup Options on the Rock Island Meriva
The 28-inch vent rib barrel accepts the included choke tubes, and you get four of them: slug, full, modified, and improved cylinder. That covers tight patterns for turkey and waterfowl, open patterns for skeet and flushing birds, and a slug option when you need one. The 18.5-inch barrel is a fixed cylinder bore, which is right where you want it for buckshot at close range.
For a first shotgun, a do-everything camp gun, or a budget-friendly backup that will not sit in the safe collecting dust, the Meriva 3-in-1 packs a lot of usefulness into one box. Rock Island backs it with their limited lifetime warranty, which is reassuring on a working gun that is going to see real use.
Key Specifications
- Manufacturer: Armscor / Rock Island Armory
- Manufacturer Part Number: MR25-P101-MC
- UPC: 812285025704
- Action: Pump Action
- Gauge: 12 Gauge
- Chamber: 3"
- Barrel Lengths: 18.5" cylinder bore, 28" vent rib
- Capacity: 4+1
- Chokes Included: Slug, Full, Modified, Improved Cylinder
- Receiver Finish: Marine Chrome
- Stock: Removable Black Synthetic
- Sights: Bead Front, Fixed
- Safety: Manual Thumb
- Overall Length: 39" (with stock and 18.5" barrel)
- Weight: Approx. 6.17 lbs
What’s Included
- Meriva pump action shotgun receiver with black synthetic stock and forend
- 18.5" cylinder bore smooth barrel
- 28" vent rib barrel
- Removable pistol grip
- 4 choke tubes (Slug, Full, Modified, Improved Cylinder)
- Sling swivels
Frequently Asked Questions
How hard is it to swap barrels on the Meriva 3-in-1?
It is a quick job that takes just a few minutes. You unscrew the magazine cap, slide one barrel off, seat the other, and tighten everything back down. The stock and pistol grip swap is similarly simple, so changing configurations does not require a trip to a gunsmith.
Do the choke tubes work in both barrels?
No, the included slug, full, modified, and improved cylinder chokes are for the 28-inch vent rib barrel. The 18.5-inch barrel is a fixed cylinder bore, which is well suited for buckshot and close-range use, so it does not take screw-in chokes.
Can the Rock Island Meriva 3-in-1 handle 3-inch magnum shells?
Yes, it has a 3-inch chamber, so it will run both 2-3/4 inch and 3-inch 12 gauge loads. That gives you room to shoot light target loads at the range and step up to heavier waterfowl or buckshot loads when the job calls for it.
Is there a warranty on the Meriva shotgun?
Rock Island Armory backs its firearms with a limited lifetime warranty covering the gun and its parts for their intended use. That is solid coverage for a working shotgun in this class.





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