Brownells has been making 20- and 30-round magazines for a full decade now, and ran a promotion last month that was so successful it continues through September. Each 20- or 3o round magazine is only $9.99, and multiple-unit purchases are available at a further reduced rate.
Constructed of 6061 heat-treated aluminum with chrome-silicon springs and a green Mil Spec follower, these magazines are designed for flawless feeding of your favorite AR-pattern rifle. Whether you prefer 20-round magazines for prone shooting or 30-round magazines for extra time on the firing line, Brownells magazines can help keep your range time more productive.
MSRP: $9.99 for either 20- or 30-round magazines.