IWI Licensed TAVOR TAR-21 Airsoft AEG Rifle by Umarex w/ Metal Gearbox (Color: Black / Competition Series) I took it apart to remove a jam, and now I'm not sure how to put it back together properly. I do have all pieces • Features - Fully Licensed Isreal Tavor TAR21 trademarks - Quick-Change Spring 8mm metal bushing metal gearbox - Integrated top rail - Functional charging handle and bolt - Bullpup "one-hand" and "long barrel" design - Flip-up Front and Rear Sights - High Strength Polymer Body and Frame - Innovative front hand guard battery compartement for fast & easy battery replacement and power change • Specifications - Length: 690mm - Weight: 1900g - Inner Barrel: 413mm - Magazine Capacity: 300rd Hi-Capacity. Compatible with Matrix, G&G, Tokyo Marui and other similar M4 / M16 Series Airsoft AEG Magazines - Muzzle Velocity: 330~360 FPS (Measured with 0.20g BBs) - Range: 70~150 feet - System: AEG / Electric / Fully Automatic. - RPM: 750 w/ 9.6V battery. - Thread Direction: 14mm Positive - Gearbox: 8mm Custom High Strength Metal TAR21 gearbox, Fully Upgradeable with quick spring change design - Fire Modes: Semi/Full-Auto, Safe - Package Includes: Tar-21 Rifle, Magazine and manuel - Battery: 9.6v Small Type recommended (Battery not included) - BB: 6mm High Grade 0.20g or heavier, Matrix and compatible bb recommended. - Hopup: Yes, Adjustable - Manufacturer: Umarex / Elite Force - FPS Range: 330-360 • About Elite Force / Umarex - Since 1972 Umarex has created a world of adventure for sport shooters, recreational shooters and hunters. Its high-performance, high quality models permit training under highly realistic conditions - The Licensed Tavor TAR21 Full Size Airsoft AEG Rifle as seen on popular video game HALO is an innovated Airsoft AEG with many advanced designs. "T.A.R. 21" stands for "Tavor Assault Rifle - 21st Century". The T.A.R. 21 was selected as the future assault rifle of the Israeli Defense Forces and will become the standard Israeli infantry weapon. The TAR21 is also being employed by special operations units across the globe. What makes the TAR21 so popular is it's bullpup design. The advantages of the bullpup design is that while it shortens the overall length of the rifle it does not sacrifice barrel length. The TAR21 features a fiber reinforced polymer body, fully upgradable metal gearbox, metal outer barrel and much more! Flip-up front sight, rear sights and integrated scope ready rails gives the TAR21 a decisive advantage on the field. In skilled hands the Tavor is a formidable airsoft rifle.