Description
Lost the factory choke, wore one out, or just want tighter groups downrange? This Carlson's Full flush mount tube fits 20 gauge shotguns running the Winchester choke system and gives you the constriction to keep pellets together where cylinder and modified fall apart. It measures right at .590 diameter, which is true Full, so you're getting the densest patterns in the flush-mount lineup short of Extra Full or Turkey.
What the Carlson's 20 GA Full Choke Does on the Pattern Board
A Full choke means tighter constriction and denser pellet count in the center of your pattern, which stretches your effective range on ducks, geese, and clays you'd otherwise miss. Carlson's has spent decades patterning thousands of load and choke combos, tuning things like the parallel section and finish so the tube throws consistent groups shot after shot. If you've been reaching for longer shots and watching birds sail off, this is the constriction that helps close that gap.
Build and Fit of the Carlson's Flush Mount Winchester Choke
This one is turned from 17-4 stainless steel and hardened for corrosion resistance and a long service life in wet blinds and dusty fields. The flush design seats even with the muzzle for a clean profile that won't snag on brush or gear. A knurled end makes install and removal easy with a wrench, and the constriction is marked right on the tube so you're never guessing which choke is in the gun. Lead, steel, and Hevi-Shot all run through it, though as a rule of thumb steel bigger than BB shouldn't go through anything tighter than modified.
Fitment Notes Before You Order
This tube fits the Winchester choke system along with Mossberg 500, Browning Standard Invector, Weatherby, and Savage 20 gauge barrels. Worth flagging: Winchester SX2, SX3, SX4, and SXP use the Browning Invector Plus pattern instead, so those need a different tube. Every Carlson's choke is made in the USA and backed by the company's lifetime warranty.
Key Specifications
- Manufacturer: Carlson's Choke Tubes
- Manufacturer Part Number: 50104
- UPC: 723189501044
- Gauge: 20 Gauge
- Constriction: Full
- Diameter: .590 in
- Mount Style: Flush Mount
- Choke System: Winchester / Win Choke
- Material: 17-4 Stainless Steel, Hardened
- Compatible Shot: Lead, Steel, Hevi-Shot
- Country of Origin: Made in USA
- Warranty: Lifetime
What’s Included
- One Carlson's 20 GA Full flush mount choke tube
Frequently Asked Questions
What shotguns does this Carlson's 20 GA Full choke fit?
It fits 20 gauge shotguns using the Winchester choke system, including many Mossberg 500, Browning Standard Invector, Weatherby, and Savage barrels. Note that Winchester SX2, SX3, SX4, and SXP models use the Browning Invector Plus pattern, so those require a different tube. Always double check your barrel markings if you're unsure.
Can I shoot steel shot through this Full choke tube?
Yes, this tube handles lead, steel, and Hevi-Shot. As a general safety rule, steel shot larger than BB should not be run through constrictions tighter than modified, so stick with BB or smaller steel loads in this Full choke. Lead loads are fine across the board.
Does the Carlson's flush mount choke come with a wrench?
Whether a wrench is included depends on the packaging style the tube ships in, so it isn't guaranteed with every unit. The good news is the knurled end and clearly marked constriction make install straightforward, and a universal Carlson's choke wrench is inexpensive if you need one.
What's the difference between this Full choke and an Extra Full or Turkey?
Full at .590 gives you tight, dense patterns great for waterfowl, trap, and longer shots without over-constricting. Extra Full and Turkey chokes squeeze even tighter for dedicated turkey work at longer yardages. If you want a versatile long-range tube for mixed hunting and range use, Full is the sweet spot.




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