Midway has the 5 round Bushmaster mag on sale.
http://www.midwayusa.com/viewproduct/default.aspx?productnumber=518106
Also a link to some Midway coupons:
http://links.mkt3690.com/servlet/MailView?ms=MTg1MTM5OQS2&r=MTk2MDA3ODM3NQS2&j=MzAzNjIyMjQS1&mt=1&rt=0