AR-180 Inspired MWS GBB Rifle, with Short-Stroked Bolt and Unique Charging Handle The Deluxe Edition of the SAP-180 Gen 2 GBB Rifle, features Primarily CNC Aluminium Billet and QPQ Treated Steel Components Compatible with Marui MWS Spec. Aftermarket Components Flush 8.5" M-LOK Handguard that can be Detached with One Screw Familiar AR-15 Lower Fire Controls Motorcycle Handlebar Style Charging Handle Salvo SCX Short-Stroked Bolt System, Allows Firing of Gun with Folded Stock SCX Style Hop Assembly and Trigger Box Updated Version 2 Internals, Much like the SCX Gen 2 Series Accepts Salvo Precision and Double Eagle MWS Spec. GBB Magazines or Similar Manufactured by Salvo Precision CNC Aluminum Construct with Steel Reinforced Components Anodised Black Finish This product is only compatible with gas designed specifically for Airsoft guns. Do not use lighter fluid or butane gas, as that will cause permanent damage.