Good evening to you!! Sorry but neither Smith and Wesson 22 magnum pistols on Bud's web site have a threaded barrel. According to S&W website neither of the pistols offer by them are threaded. Hope this helps. Have a good rest of your day.
🇺🇸🇺🇸 'Merica' 🇺🇸🇺🇸

Sorry but no it's not.

the Item number does not cross This is the one I found at buds budsgunshop.com/product_info.php/products_id/169328/smith+wesson+mp+22+magnum+10rnd+compliant according to S&W neither model of the 22WMR M&P pistols have a threaded barrel see *******
width 1.13 in
length 8.4 in
height 5.9 in
weight 22 oz
CALIBER 22 WMR
SIZE FULL
CAPACITY 10
ACTION INTERNAL HAMMER FIRED
BARREL LENGTH 4.35
GRIP POLYMER
SIGHTS FIBER-OPTIC
OPTIC READY YES
SAFETY THUMB
COLOR/FINISH BLACK
STATE COMPLIANCE CO, CT, DE, HI, IL, MD, NJ, NY, RI, VT, WA
*****THREADED BARREL NO
FRAME POLYMER
LASER NO
NUMBER OF MAGAZINES 2
10LB TRIGGER NO
BARREL MATERIAL STAINLESS STEEL
MODEL M&P 22 MAGNUM