Description
Plain-barrel shotguns are workhorses, but that little factory bead can vanish against a dark treeline or a fast-moving clay. The HiViz MPB fixes that in about a minute. It snaps directly onto the barrel behind your front bead, glows bright in green or red, and gives you a reference point your eye picks up instantly. No drilling, no dovetails, no trip to the gunsmith.
What Makes the MPB Snap-On Different
This sight is built around HiViz's LitePipe fiber-optic technology, the same collect-and-glow system found across their lineup. The MPB uses a durable polymer base that grips the barrel and self-centers behind the existing bead, so alignment stays true without any fussy setup. Because it clamps on rather than getting installed permanently, you can move it between guns or pull it off entirely whenever you want.
Swap Colors and Sizes to Fit Your Eyes
One of the best parts of the MPB is the flexibility that comes right in the package. It ships with four interchangeable LitePipes, two green and two red, in both 0.135 inch and 0.175 inch diameters. The wider pipe throws a bigger, brighter dot for fast target work, while the slimmer one gives you a more precise aiming point. Green tends to read brightest in most daylight, red cuts through certain backgrounds better, so you can experiment and settle on what your eye grabs quickest.
Built for Ribless Shotguns
The MPB is made specifically for 12, 16, and 20 gauge shotguns that do not have a ventilated rib. Think classic pump guns, home-defense scatterguns, and utility field shotguns with a plain barrel and a bead up front. It's a low-cost, reversible upgrade that makes a real difference on turkey guns, clay setups, and anything where getting on target fast matters. Folks who've added one usually notice how much quicker their eye lands on the sight compared to a bare bead.
Key Specifications
- Manufacturer: HiViz Shooting Systems
- Manufacturer Part Number: MPB
- Model: Snap-On
- UPC: 613485584332
- Product Type: Fiber Optic Front Sight
- Style: Fiber Optic Bead
- Fits: 12, 16, and 20 Gauge Plain Barrel Shotguns (no vent rib)
- LitePipe Colors: Green (2), Red (2)
- LitePipe Diameters: 0.135 in and 0.175 in
- LitePipe Shape: Round
- Base Material: Polymer
- Installation: Tool-free snap-on
- Warranty: Limited lifetime (LitePipes considered wear items)
What’s Included
- MPB snap-on sight base
- Two green LitePipes (0.135 in and 0.175 in)
- Two red LitePipes (0.135 in and 0.175 in)
Frequently Asked Questions
Will the HiViz MPB fit my shotgun?
The MPB is designed for 12, 16, and 20 gauge shotguns that have a plain barrel without a ventilated rib. It snaps on directly behind your factory front bead and self-centers for alignment. If your barrel has a vent rib, you'll want a different HiViz model made for that setup.
Do I need any tools or a gunsmith to install the MPB?
Not at all. The snap-on base clamps right onto the barrel with no tools, no drilling, and no permanent modification. Most people have it on and centered in under a minute, and you can remove it just as easily whenever you like.
What's the difference between the two LitePipe sizes and colors included?
You get four LitePipes total, two green and two red, in 0.135 inch and 0.175 inch diameters. The larger diameter gives you a bigger, brighter dot for quick target acquisition, while the smaller one offers a more precise aiming point. Swapping between them lets you pick the color and size your eye picks up fastest in your usual lighting.
Will the MPB stay put during recoil?
The polymer base grips the barrel snugly and holds through normal shooting. Some users add a small piece of tape or a dab of adhesive for extra peace of mind on hard-kicking guns or if they never plan to remove it, but that's a personal preference rather than a requirement.





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