Gemtech S&W M&P 22/Walther P22/Umarex Colt 1911/22 Thread Adapter M8x.75 To .5-28 Threads Available to order on-line. Ships in 5-14 days $48.00
Gemtech 22 QDA Assembly, Quick Attach/Detach Adapter, 22LR, Black Finish, Includes One Thread Mount, One Adapter, and an Installation Wrench 12201 Available to order on-line. Ships in 5-14 days $132.00