Tiger Rock AR-15 Lower Parts Kit w/ Upgraded Grip Extended Trigger Guard & Dual Safety Selector Black. Specifications for Tiger Rock AR-15 Lower Parts Kit w/ Upgraded Grip Extended Trigger Guard & Safety Selector: Manufacturer: Tiger Rock Color: Black Finish: Matte Fabric/Material: Aluminum/Polymer/Steel Caliber: Universal Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Included Accessories: Standard Condition: New Package Contents: Magazine Catch Assembly w/Button and Spring AR-15 Single/Dual Safety Selector Lever AR-15 Bolt Catch Assembly Kit with Plunger Spring & Roll Pin 223 308 Buffer Tube Detent Plunger & Retainer Spring (x2) Takedown/Pivot Pin Detents & Springs Safety Spring and Detent pin (x2) Trigger Hammer Pin Takedown Pin Pivot Pin Trigger Spring AR-15 A2 Style Pistol Grip Pistol Grip Screw and Lock Washer Hammer Spring AR-15 Disconnector AR-15 Disconnector Spring AR-15 Trigger AR-15 Hammer AR-15 Aluminum Extended Trigger Guard Assembly Tiger Rock LPK-19: AR-15 Lower Parts Kit w/ Upgraded Grip Extended Trigger Guard & Dual Safety Selector Black