Quote
Originally posted by HatchetJack:
https://search.yahoo.com/search;_ylt=AtKusv4mwgVjKZu0a6BX50abvZx4?p=bump+fire+stocks&toggle=1&cop=mss&ei=UTF-8&fr=yfp-t-901&fp=1
Have you ever bump-fired a semi-auto? You can certainly do so for free -- without forking over the cash for some gimmick stock. All you need to do is let the rifle's recoil bounce your finger on the trigger. Heck, here are a couple of videos of different people bumpfiring UNMODIFIED 10/22 rifles:

https://www.youtube.com/watch?v=kk1uxD1DtXU

https://www.youtube.com/watch?v=y4IvDZ2dShc

You still have to learn proper bumpfiring techniques to use one of those stocks.

http://en.wikipedia.org/wiki/Bump_fire

From the above link:

Quote
All these techniques greatly degrade the accuracy of the firearm, due to the necessary jerking of the weapon, which makes viable aiming impossible. The techniques trade accurate, aimed fire for an increase in the firearm's rate of fire. With bump-firing it is common to "empty the mag" with at least one stoppage. The inaccuracy, difficulty, and ammunition costs render the practice uncommon.