http://www.ebay.com/itm/GWS-Pro-Hunter-STABILIZER-For-Compound-Bows-BLACK-6-WEIGHT-8-OUNCE-NEW-ARCHERY-/390973441566?hash=item5b07d5461e:g:gkAAAOSw~FNUY86M



$11.00 on EBay. Adds 8 ounces. They come in different weights. I took an extra magazine grip cap and drilled a 1/4" hole in the end. Screwed this in it and placed a self locking nut on the inside. I used camouflage because the gun I was adding it to was a camouflage 11/87 3 1/2" gun my son used for snow geese. With big, heavy loads it was too light and was a handful. Added half a pound inside the butt stock and one of these and made it a fun gun to shoot snow geese.