From their site:
Ordering and Payment
Archer Airguns will accept on-line payment from Visa, MasterCard, or Discover card. Credit card is the only form of payment accepted for on-line orders.
Alternatively, you can order by fax or phone on 585-425-0277. If using the telephone, please have your credit card ready.
We also accept orders by mail, accompanied by Money Order payment. Please send payment to:
Archer Airguns Inc.
144 Fairport Village Landing, #300
Fairport. NY 14450-1804