some images uploaded of the big dot seemingly have the tritium glowing in indoor light. mine is not nearly this bright. did i get a dud?

No, I don’t think so - all my tritium sights (XS Big Dot on my Shockwave and several others on various handguns) only “glow” in low light or the dark. In daylight I focus on the large white outline of the XS sight.

will this work on a 1300 defender?

Actually, yes. However, you must first replace the factory bead on your Winchester. A Brownell's #6 will work great. There will be excess material on the inside of the barrel, but this is easily ground off with a roto tool.

Does this work on the sight with bead on the pedestal

For proper fit & install, original bead has to removed & replaced w/new bead provided from XS Sight. If you have pedestal, has to be wide enough to accommodate width of XS Sight. Unfortunately, most pedestals are narrow & XS Sight has a wide base.

Not understanding pedestal or plain barrel option. i have a bead with a hex base. please explain?

Is your bead on a pedestal, like Remington 870s, or is the bead installed directly onto a plain, round barrel. If your shotgun is a Mossberg and has a small bead with a hex base drilled directly into the barrel, then you want the plain barrel. The XS kit comes with a replacement bead for this model since the steel sight will not fit over the hex base and Mossberg uses proprietary threading. If you have some other shotgun with a bead with a hex base, but it's on a plain barrel, you'll want to plain barrel model, but will also need to source a replacement bead with the threading the manufacturer used.

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XS SIGHTS Big Dot Shotgun Front Sights with Tritium and Photoluminescent Glow Dot, High-Contrast Sights for Plain Barrel Shotguns

XS SIGHTS Big Dot Shotgun Front Sights with Tritium and Photoluminescent Glow Dot, High-Contrast Sights for Plain Barrel Shotguns

Product ID: 202307507

Details

Brand
XS Sight
Color
Tritium Yellow
Compatible Devices
Mossberg Plain
Item Weight
0.05 kg
Magnification Minimum
1 x
Material
Alloy Steel

🔆0.188" Big Dot for max visibility

🛠️DIY install with simple instructions

🇺🇸CNC-machined steel, made in USA

89077CFA

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Description

🎯 Lock on fast, shoot confident—Big Dot sights that never quit!

EFFORTLESS DIY UPGRADE - Install in under 30 minutes with no gunsmith needed—save time and money
BUILT TO LAST MADE IN TEXAS - CNC-machined alloy steel with rust-resistant blued finish for rugged durability
OPTIMIZED FOR MOSSBERG SHOTGUNS - Perfect fit for plain barrel models with included conversion bead for seamless swap
UNMATCHED VISIBILITY IN ANY LIGHT - 0.188" tritium & photoluminescent Glow Dot ensures rapid target acquisition day or night
DEFENSE READY LOW LIGHT PERFORMANCE - Yellow glow outshines competitors in dim conditions, giving you the edge when it counts

The Big Dot Shotgun Front Sights combine a massive 0.188" tritium vial with photoluminescent Glow Dot technology to deliver superior visibility in all lighting conditions. Designed specifically for Mossberg plain barrel shotguns, these CNC-machined steel sights offer rugged durability and easy DIY installation. Made in the USA, they provide a defense-ready upgrade that ensures quick, precise aiming when it matters most.

Specifications

ASIN	B07XLDLPZF
Best Sellers Rank	#100,756 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1,202 in Hunting & Shooting Optics
Brand Name	XS Sight Systems
Color	Tritium Yellow Dot
Compatible Devices	Mossberg Plain Barrel Shotgun
Customer Reviews	4.6 4.6 out of 5 stars (678)
Included Components	Hunting Gun Parts Sights
Item Type Name	Hunting Gun Parts Sights
Item Weight	0.05 kg
Magnification Minimum	1 x
Manufacturer	XS SIGHTS
Manufacturer Part Number	SG-2005-3Y
Material Type	Alloy Steel
Model Name	FBA-BD-Shotgun
Model Number	SG-2005-3Y
Mounting Type	Picatinny Mount
Number of Items	1
Product Style	Mossberg 500/590
Reticle Type	Big Dot
Sport Type	Hunting
UPC	647533046312
Unit Count	1 Count

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89077CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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