The C4.1 Semi-Automatic Crossbow features a few improvements over the original C4, such as:

-Capacity has been increased from 4 rounds to 6 rounds
-Magazine cover has been improved to be more sturdy
-Trigger handle has been changed to be more comfortable
-A stock has been added.

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***NOTE: TO BUILD THIS MOD, YOU NEED TO BUILD THE C4 CROSSBOW FIRST***

The crossbow's range is still 35+ feet, and it is still powerful and accurate.

Step 1: The Stock

This step will build the stock of the gun.

Step 2: The Rear Cover/Stock Attachment Area/Rear Sight

This step builds this part of the gun.

Step 3: The Trigger Handle

This step rebuilds the handle.

Step 4: Magazine Cover

This step rebuilds the cover which goes over the magazine area (where the rounds come out).

Step 5: Magazine Adjustments

This step slightly lengthens the magazine, to support the extra 2 rounds. The total magazine capacity 6 rounds. (As well as the 18 necessary rubberbands to fire them, see the rubberbands sections in the original C4 Crossbow Instructable).