Description
Carlson's built this Modified flush mount choke for folks running a 20 gauge Winchester who want one tube that does a little bit of everything. Modified is the classic all-around constriction, and the .600 diameter here strikes that balance between an open pattern for close targets and enough tightness to reach out past the improved cylinder range. If you're only going to keep one choke in your bag, this is the one most people reach for.
Where the 50103 Modified Choke Really Shines
Modified is popular for a reason. It holds a good pattern out to the 25 to 35 yard window with lead shot, which covers a huge chunk of real-world shooting. That makes it a solid pick for pheasant on the flush, dove over a field edge, ducks working close over the decoys, and busting clays on the trap range. It's the choke that keeps you from second-guessing yourself when the shots start coming at mixed distances.
Built From 17-4 Stainless, Made to Last
Carlson's CNC machines these tubes from solid 17-4 heat-treated stainless steel, then hardens them so they hold up shot after shot without wearing out. The end is knurled so you can grab it and back it out by hand without a wrench fighting you, and the constriction is laser marked right on the body so you always know what's in the barrel. Lead shot runs great through all constrictions, and steel is fine through Modified as well.
Fitment for the Winchester 50103
This is a flush mount replacement that seats clean with the barrel, no extended section sticking out. Beyond Winchester it also fits Browning Invector, Mossberg 500, Savage, and Weatherby 20 gauge shotguns that use the Win Choke thread pattern. One note worth checking: the Winchester SX2 and SX3 use the Browning Invector Plus pattern instead, so those need a different tube. Every Carlson's choke is made in the USA and carries their lifetime warranty, so if it ever gets damaged they'll replace it.
Key Specifications
- Manufacturer: Carlson's Choke Tubes
- Manufacturer Part Number: 50103
- UPC: 723189501037
- Gauge: 20 Gauge
- Constriction: Modified
- Diameter: 0.600 in
- Mount Style: Flush Mount
- Thread Pattern: Win Choke
- Material: 17-4 Heat-Treated Stainless Steel
- Shot Compatibility: Lead and Steel
- Fits: Winchester, Browning Invector, Mossberg 500, Savage, Weatherby
- Country of Origin: Made in USA
- Warranty: Lifetime
What’s Included
- One Carlson's 50103 Winchester 20 Gauge Modified flush mount choke tube
Frequently Asked Questions
What is a Modified choke best used for on a 20 gauge?
Modified is the go-to all-around constriction and the most versatile choke for a 20 gauge. It holds a good pattern from about 25 to 35 yards with lead, which makes it a strong choice for upland birds, dove, waterfowl over decoys, and trap or sporting clays. If you only run one choke, this is the one most people pick.
Will this 50103 choke fit shotguns other than Winchester?
Yes. Beyond Winchester, it also fits Browning Invector, Mossberg 500, Savage, and Weatherby 20 gauge shotguns that use the standard Win Choke thread pattern. Just note that the Winchester SX2 and SX3 use the Browning Invector Plus pattern instead, so those models need a different tube.
Can I shoot steel shot through the Carlson's 50103 Modified choke?
You can. Lead shot runs great through every constriction, and steel is fine through the Modified. As a general rule, keep steel shot larger than BB out of anything tighter than Modified to be safe on both the choke and your patterns.
Does this choke sit flush or stick out of the barrel?
It's a flush mount design, so it seats even with the muzzle with nothing extending past the barrel. The end is knurled so you can grab it and back it out by hand, and the constriction is laser marked on the body so you always know what's loaded.





Reviews
There are no reviews yet.