C&R License is a FFL License. It's called FFL03 (C&R) as apposed to FFL01(Distributor-Dealer/Gunsmith)
Here is a list of discounters. Some require a fax, some will take a scanned pdf and I think a few still require mail in. Call them to see the best way. I know midway and brownells can give you discount on there web site with a few key strokes. Numrich you have call, fax in and provide them with a email address. They will then email you a dealer number that you use when you sign up for an account online.
Don't bother with the big stores (you should know who they are). they act like the FFL03 dosen't exist. I traded a C&R shotgun to one of them and I asked for there FFL# so I could enter it into my bound book for disposition. He told me that they don't give it out to anyone and a C&R holder didn't matter. I get audited just like you do pal......
AIM Surplus (firearms/ammo seller), P.O. Box 556, Springboro, OH. 45066
Allan's Armory, P.O. Box 331, Graham, FL 32042
Aztec International, PO Box 771569, Ocala, FL 34477-1569, (352) 629-6290
Brownells Inc (gun parts etc.), 200 South Front Street, Montezuma, IA 50171
Centerfire Systems, 102 Fieldview Dr, Versailles, KY 40383
Century Arms (firearms/ammo), 1161 Holland Dr., Boca Raton, FL 33487
Cole Distributing (firearms/ammo seller), P.O. Box 247, Scottsville, KY 42164
Empire Arms, P.O. Box 2068, Ormond Beach, FL 32175
FAC of America, 8035 Ranchers Road, Fridley, MN 55432, Phone: 1.800.486.5971
Graf and Sons, Inc (ammo, reloading, supplies etc.), 4050 S. Clark, Mexico, MO 65265
Huntingtons (ammo, reloading), P.O. Box 991, Oroville, CA 95965
J&G Sales (firearms, ammo, accessories), 440 Miller Valley Rd, Prescott AZ 86301
InterOrdnance, 3305 Westwood Industrial Dr., Monroe, NC 28110
L.C. Enterprises (firearms, ammo seller), S. 1093 Country Road G, Wonewoc, WI 53968
Numrich Gun Parts (gunparts Offers DISCOUNT), 226 Williams Lane, W. Hurley, NY 12491
SARCO Inc. (firearms/ammo, gunparts, accessories), P.O. Box 98, 323 Union Street, Stirling, NJ 07980
Southern Ohio Guns (SOG) (firearms/ammo), 240 Harmon Ave P.O. Box 590, Lebanon, OH 45036
Wholesale Guns (firearms/ammo), P.O. Box 289, Calverton, NY 11933
Midway USA (parts, ammo, reloading, books etc.), Dealer Sales, 5875 W. Van Horn Tavern Rd., Columbia, MO 65203
Samco (firearms/ammo), 6995 NW 43rd St, Miami, FL 33166