Nikko Stirling Howa 1500 Picatinny Base Long Action 20 MOA Black. These Riflescope Mounts & Bases allow for the maximum amount of rail space possible with no reciprocal to limit positioning of your scope whether in front of you or not. The Nikko Howa Rifle Scope Rail is spring-loaded to prevent the loss of hold your Rifle Scope and other shooting accessories when removing the gun from the firing line. This 20MOA Howa Rifle Scope Base Rail fits the Howa Rifle Carbine. Specifications for Nikko Stirling Howa 1500 Picatinny Base: Manufacturer: Nikko Stirling Color: Black Finish: Matte Fabric/Material: Aluminum Gun Rail: Picatinny Cant: 20 MOA Gun Type: Carbine Gun Make: Howa Co-Witness: No Gun Model: Howa 1500 Action Length: Long Action Length: 9 in Width: 3.5 in Height: 1 in Weight: 0.5 lb Package Contents: Nikko Stirling Howa 1500 Picatinny Base Nikko Stirling NM15505: Howa 1500 Picatinny Base Long Action 20 MOA Black