Pre Build - MK18 Goblin “Pre Order“Real Deal Pre Build MK18 Goblin 1. 4 Joules 40 RPS about 390 FPS with . 2 The Goblin Series of Pre Builds Focuses on 3 main points. Performance, Ergonomics, and Aesthetics. This Build Features a DSG Variant Real Deal Piston with Excess Teeth Removed Thus saving weight as well as the Real Deal Piston Head with enlarged Port Holes. This Build sports a 9 inch Outer Barrel. Performance All Goblin Series are DSG Builds. 40 RPS is the minimum. Extremely