Rival Arms Extended Slide Lock for Glock 17,19,34 Gen5 Black QPQ Case Hardened Stainless Steel Field Strip Your Pistol quickly And Easily With Stainless Steel Slide Lock (Take Down Lock) That Is easier To Grip And Wont Chip, Wear, Or Break. CNC-machined From a Solid Stainless Steel Billet For a stronger More Precision Part And Quench-Polish-Quench (QPQ) Thermo-Chemical Case Hardened To Resist Normal Wear And Tear Even In The harshest conditions. No Gunsmith required. Model: Extended Slide Lock Material: Stainless Steel Finish: Black QPQ Case Hardened