For Sale: 3 - Brand new STI brand 170mm magazine tubes to fit a 2011 handgun in 40 S&W. These are new old stock still in original STI packaging. Will hold 23 rounds each when assembled. These are from ban era when you could buy hi cap magazine parts. Will need a 40 cal follower, spring and base pad to make functional. ***REDUCED PRICE*** Sell as a lot of 3 for $110 shipped.