Blackout Defense Arca-Swiss Plate Black. It only requires two M-LOK slots and will stay out of your way until you need it. The Arca-Swiss mounting system is a staple among precision shooters and many hunters. The Arca-Swiss Plate allows you to quickly and easily secure your rifle to your Arca-Swiss compatible tripod head for supported shooting positions. Combine this plate with their Quantum DTL handguard system and you have a rock-solid solution for field improvised shooting positions with no degradation to accuracy. Specifications for Blackout Defense Arca-Swiss Plate: Manufacturer: Blackout Defense Fabric/Material: 7075 Aluminum Gun Rail: M-LOK Gun Type: Rifle Length: 3.35 in Weight: 2.1 oz Features of Blackout Defense Arca-Swiss Plate Compatible with Arca-Swiss tripod heads Compatible with RRS R-Lock system M-LOK compatible Package Contents: Blackout Defense Arca-Swiss Plate Blackout Defense ARCA-SWISS-PLATE-BLK: Arca-Swiss Plate Black