Saw this another site.

NRA - Join the NRA - Bonus Offer
Go to the bottom of the page and see where you can join for free/trial membership

NRA now offering FREE "Bonus" memberships!

If you're not yet a member of the NRA, or if you have friends, family, or children who haven't joined yet, this could be a once-in-a-lifetime chance to get memberships at no cost.

Sign up now!

To prepare for coming battles to protect our Second Amendment rights, the NRA is offering what it's calling "Bonus" memberships to rapidly swell their ranks of pro-gun Americans. These memberships are for 1 year, come with all the usual benefits of membership, including a magazine, insurance savings, and discounts at many popular businesses.

We don't know how long this special offer will last. They certainly can't do this forever. So we recommend that you act immediately to avoid missing out.

You can sign up yourself, your wife, kids, friends, neighbors, nieces, nephews, and anyone you think should be a member. But please, do it NOW!

Go to the NRA Bonus Membership page