Description
This is the genuine factory 28-inch all-purpose barrel built specifically for the Mossberg 835 Ulti-Mag pump. It's a smoothbore with a vent rib, dual bead sights up top, and a matte blued finish that shrugs off knocks in the blind and the boat. Since it comes straight from Mossberg, fit and function are exactly what you'd expect from the original barrel, so it drops right onto your 835 without fuss. The 835 Ulti-Mag was the first 12 gauge pump designed around 3.5-inch shells, and this barrel keeps that same multi-season versatility, handling 2.75, 3, and 3.5-inch shotshells with ease.
What Sets the 835 Ulti-Mag Barrel Apart
The big story here is the overbored barrel. Mossberg builds the 835's smoothbore to 10 gauge dimensions down the full length, which cuts down on pellet deformation and gives you denser, more uniform patterns than a standard 12 gauge bore. That's why this platform earned a following with turkey and waterfowl hunters who want every pellet counting downrange. The vent rib keeps your sight plane cool and true, while the twin bead setup gives you a quick, natural point of aim.
Choking Down the Mossberg 835 Barrel
This barrel uses Mossberg's Accu-Mag choke system, which is specific to the 835 and not interchangeable with the Accu-Choke tubes found on the 500 or 535. The kit ships with three flush Accu-Mag tubes, Improved Cylinder, Modified, and Full, plus a choke wrench, so you can retune the gun for the situation on hand. Swap to Full for tight buckshot or turkey work, back off to Improved Cylinder for close-flushing upland birds, and you're covered across a full season of hunting.
Whether you're replacing a worn or damaged barrel or just want a longer all-purpose tube to complement your shorter setup, this factory piece keeps your Ulti-Mag doing what it does best. One thing worth knowing: the overbored design is built for shot, so Mossberg does not recommend running single-projectile slugs through it.
Key Specifications
- Manufacturer: Mossberg
- Manufacturer Part Number: 90831
- UPC: 015813908313
- Fits: Mossberg 835 Ulti-Mag
- Gauge: 12 Gauge
- Chamber: Handles 2.75", 3", and 3.5" shells
- Barrel Length: 28"
- Barrel Type: All-Purpose, Vent Rib
- Bore: Overbored Smoothbore
- Sights: Dual Bead
- Chokes Included: Accu-Mag Set (IC, Modified, Full)
- Material: Steel
- Finish: Matte Blued
- Model: OEM Factory Replacement
What’s Included
- Mossberg 835 Ulti-Mag 28" vent rib barrel
- Accu-Mag Improved Cylinder choke tube
- Accu-Mag Modified choke tube
- Accu-Mag Full choke tube
- Choke tube wrench
Frequently Asked Questions
Will this barrel fit my Mossberg 835 Ulti-Mag?
Yes, this is a factory Mossberg barrel built specifically for the 835 Ulti-Mag 12 gauge. It's the same overbored design used on the platform, so it drops right on without any gunsmithing. Just note it's made for the 835 and won't interchange with a Mossberg 500 or 535 receiver.
Can I shoot slugs through this Mossberg 835 barrel?
No. The 835's smoothbore is overbored to 10 gauge dimensions, and Mossberg does not recommend running single-projectile slugs through it. If slug hunting is your goal, look at a dedicated rifled or rifle-sighted slug barrel made for the 835 instead. This all-purpose barrel is built for shot loads.
Do the included chokes work with steel shot?
The Accu-Mag set includes Improved Cylinder, Modified, and Full flush tubes that cover most field and waterfowl needs. For heavier steel loads it's smart to check Mossberg's load guidance and pattern your gun first, since tighter constrictions and steel don't always mix well. Patterning at your typical range tells you exactly what each tube is doing.
Why does the 835 use Accu-Mag chokes instead of Accu-Choke?
The 835 has that larger overbored barrel, so it takes the Accu-Mag choke system rather than the Accu-Choke tubes found on the 500 and 535 series. The two are not interchangeable, so make sure any extra tubes you buy are marked for the 835. Mossberg catalogs a wide range of Accu-Mag tubes, plus there are plenty of aftermarket options.




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