With possible legislation coming in 2013 to ban assault weapons and ammunition for large capacity magazines, panicked buyers have reportedly stripped shelves at retail stores and online gun stores.
The demand has caused prices for rifle magazines, rifles, parts and accessories to more than double, reports Guns.com.
Brownells, the world's largest supplier of guns, said that it sold three-and-a-half years worth of magazines in three days.
Brownells CEO Pete Brownell wrote on Ar15.com:
"I wanted to take a minute to shed some insight on the magazine situation if I can. First of all I wanted to offer an apology for the situation... with magazines being 'In-Stock' and back-ordered moments later... [The] demand for magazines actually exceeded the ability for the system to keep up with the volume that was being ordered."
"To shed some more light on the magazine situation at present, it really has been unprecedented in the last 5 days. During a roughly 72 hour period...we sold the 'average demand' equivalent of about 3.5 years worth of PMAGS, and an even greater amount of our Brownells magazines."