|The Next Level Big Block Rail can be used as a small drop forward or even as small drop back (perfect for the short 45 ci tanks or just for those that like to run their guns a little longer). The spilt rail design is shorter than others on the market, reducing the overall height of your marker and making you a smaller target. Drop forward will fit standard in line 2 hole patterns commonly found on Piranhas, Autocockers, Angels, Intimidators and more. 2.25in long, .625in tall, .5in wide. Black anodized aluminum.