One last Issue to solve; hole in centre of spool too large, needs to be smaller to stop dart pulling back after firing. 23/12/2014: V7 Larger spool, now made from two parts. 23/12/2014: V6 Larger spool holder 22/12/2014: V5 Smaller Hexagonal spool for easy fit and larger mount rails for easy fit 22/12/2014: V4 Hexagonal spool for more reliable printing. 22/12/2014: V3 Adds square body to ensure printing also moves spool closer to main body for better support. 22/12/2014: V2 First print shows issues with measurements for mount. Adds height for mount and also prints on side for better support. A reel mod for the Firestrike Pistol to be used in conjunction with the Grappling hook (http://www.thingiverse.com/thing:604853) Slides on to top of pistol.