The Dalles Police Department says it has completed the transition to a new duty sidearm.  In a social media statement, TDPD says it recently completed the transition to the Glock 47, chambered in 9mm.  The department’s former service handgun was chambered in .40 caliber and those sidearms had been in service for 12 years.  The 9mm round offers similar performance to the .40 caliber and costs substantially less at about 31 cents per round while the .40 caliber costs around 48 cents per round.  The price differential saves about $150 per case of ammunition.  The new sighting system, known as a red dot system, offers greater accuracy than open sights, promotes faster learning and are meant to be shot with both eyes open, giving better situational awareness to officers during encounters. The department adds the new sidearms are carried in a modern, high security holster to ensure maximum retention during non-lethal force encounters.  Tactical pistol mounted lights continue to be used with the new sidearms to aid officers in low light encounters.