Hi Rocky and welcome. No Sir, the choke is a "Fixed Modified" Choke: mossberg.com/510-mini-super-bantam-all-purpose-field-50358.html -- Cheers and stay safe!

no it is a Fixed modified choke barrel see ******Mossberg® 510 Mini All-purpose Pump Action .410 Bore Shotgun
Since 1919, Mossberg has been the leader in introducing high-quality shotguns at an affordable price. And this Mossberg 510 Mini All-purpose Pump Action Shotgun is no exception. Designed specifically for small-framed shooters, the synthetic stock is adjustable and makes for comfortable, all-day shooting. Its sleek barrel design offers excellent balance and swing, while the ventilated top rib and dual bead sight provide you with an excellent sight line for acquiring fast-moving birds.
******Fixed modified choke
Equipped with swivel studs and recoil pad
Ventilated top rib