Sleeve for 15 round Derya TM22 Magazine

Brand new, never used (I ordered wrong). This polymer sleeve by: https://tommyenterprises.com/product/derya-tm22-magazine-sleeve/ fits over the Derya factory 15-round polymer magazine, and gives the rifle a better overall look (beefier mag, instead of the spindly looking .22 mag). This one sells new on the tommyenterprises site for $40. Asking $25. Thanks. L