I found this $5 credit while looking for a bound book on Brownells. Its a $5 off coupon hidden in the books section on Brownells.
http://www.brownells.com/.aspx/pid=318/Product/BROWNELLS_CATALOG_CREDIT
"Thanks for buying a Brownells catalog. To say thanks, here's $5 credit for you. Just enter the number 1 in the Quantity field, click Buy, and your credit will show up in your Cart and be deducted when you check out. Can only be redeemed once."
http://www.brownells.com/.aspx/pid=318/Product/BROWNELLS_CATALOG_CREDIT
"Thanks for buying a Brownells catalog. To say thanks, here's $5 credit for you. Just enter the number 1 in the Quantity field, click Buy, and your credit will show up in your Cart and be deducted when you check out. Can only be redeemed once."