This is my third prototype version that uses a length of slingshot rubber to propel standard crossbow pistol bolts or darts. It has been simplified to minimize a lot of hand fitting. It can fire 14 bolts in 8 seconds that penetrate drywall (plasterboard). As shown, the magazine capacity was reduced to 12 bolts to increase range and penetration.

Aluminum bolts like this are commonly available in sporting goods stores, and on eBay, (36 for under $10 plus shipping). Also available are plastic (PVC) ones that give better range, but the aluminum ones can be weighted for greater penetration at the cost of range.

• Fun to build and fun to use
• Fires bolts as fast as you can pump it.
• The shoulder stock is quickly detachable.
• Fast and very smooth. 
• Feeding is superbly reliable.
• Parts are available at most hardware stores
• Power is adjustable
• Updates and accessory plans will be available free

12 bolts in 10 seconds.
Angle changed as target got knocked around.


Tools required
Table saw, a Dremel (high speed hand grinder) type tool are recommended. Hacksaw and metal files will be needed (although the metal work is minimal), along with an electric drill motor.

Suitable for home defense, hunting small game at close ranges. As with the Flapdoodle folding dinghy plans, building options will be presented as you build it along with time and money saving hints.


Plans with lots of drawings, photos, and step-by-step instructions and hints only $20 PayPal

Your plans will be sent via e-mail in zipped HTML format. Simply use your web browser.

Disclaimer (There always seems to be that)
You must be 18 years of age or older to order plans. Some states, cities or countries may prohibit building or possessing weapons of this nature. YOU must be responsible to check first.

NEW Tweaks for your 50# crossbow pistol

flapdoodle_dinghy@yahoo.com