Just in case anyone missed it, there is a 20% off coupon inside the Glock Box. You register your new G44 and Glock sends you a code to be used at the Glock Store. store.teamglock.com NOT to be confused with the glockstore.com. Yes, it can be used for the threaded barrel. Barrel is now $ 124 but with tax and shipping, mine came out to $ 144.14.