Yes it is
Need model number
I would go to Numrich Gun Parts Corp.
You can purchase this item at Cabela's
According to the store brand cross reference in Numrich gun parts corporation's catalog, Sears model 2t was made by Winchester. I believe it is a Winchester model 141 because the model 131 is magazine fed and the model 121 is a single shot.
Made for Sears by Savage. We carry 5 and 10rd magazines. www.countrygunsmith.net
where can i get a magazine for a sears and roebuck j.c. higgins model 46 dl-10319840 22 cal. lever action rifle
You can try e-gunparts.com
I believe your rifle is a Marlin Model 80 made for Sears.
You can purchase a magazine for a Sears 22 caliber LR rifle at various online retailers, such as Brownells or MidwayUSA. Additionally, check local gun shops or sporting goods stores, as they may carry compatible magazines. You might also find second-hand options on platforms like GunBroker or eBay. Always ensure that the magazine is compatible with your specific model.
There are many websites that sale subscriptions to Your Big Backyard magazine. Among them are Magmall, Speedy Mags, Sears, Barnes and Noble, and Discount Press.
One place to check for a magazine for an older model .22 rifle is at a pawn shop that trades guns. Another would be neighborhood yard sales.