Samson Evolution 2in. Rail kit Black. We offer some of the lowest prices around with hundreds of the great brands that make the gear you need. We stand by all of our products with great customer service and the know-how of in-house product experts who can help you find the perfect option for your needs - and that's in addition to our free shipping options on many products. We are your number one source for buying terrific gear like Samson Evolution Series 2" Rail Kit. Evolution accessory rails can be added or removed at any of 7 positions around the rail and any place along the length of the tube. Compatible with Evolution Series only and RTR Series. 2" Accessory rail kit includes two rails. Specifications for Samson Evolution Rail Kit: Manufacturer: Samson Color: Black Finish: MIL-A-8625 type III class 2 anodizing Fabric/Material: 6061-T6 Aluminum Weight: 7 oz Condition: New Package Contents: Samson Evolution Series 2in Rail Kit Samson 04-03015-01: Evolution 2in. Rail kit Black