For Glock 19 fans can now experience the power of the flamethrowing 22TCMR cartridge by simply swapping out the barrel, spring, and guide rod with the 22TCM9R conversion kit. Revel in the penetrating power of 2000 fps while enjoying the easily-managed light recoil famous in the 22TCM design. Caliber Supported: 22TCM9R Barrel length: 4 in. Weight Empty: 138 grains Finish: Parkerized Rifling, Twist: Right hand, 1 turn in 16″ Number of Grooves: 6

ATI Upper/Lower Conversion Adapter Kit Features: The AR-15 conversion adapter will fit any standard AR-15 556/223 lower and convert it to 9mm with no required modifications to your lower or magazines. This mag well adapter has a built in magazine release for your For Glock mags, locks in place with your standard AR-15 magazine catch, releases the same way AR mags do and has a bolt hold open feature that locks your bolt back after the last round. This 9mm AR adapter accepts For Glock style double stacked 9mm magazines and comes with one 10 round magazine. 100% made in the USA. IMPORTANT- You must install a complete 9MM AR Rifle or Pistol Upper receiver onto your 556/223/300blk lower receiver for this to fit and operate. ATI Upper/Lower Adapter Specifications:  Model: Upper/Lower  Type: Conversion Adapter Finish: Black Material: 6061-T6 Aluminum Caliber: 9mm Additional Info: Comes with a 10 rd Magazine