Special offer with the purchase of any NEW VP9SK model. Valid on purchases from March 1st, 2018 through April 15th, 2018. Copy of dated purchase receipt** required. Supporting documents MUST accompany the submission. Must have email access to receive a promo code. Promo code is for one-time use at us.hkwebshop.com and will expire 30 days after the promotion period. Limit one serial number per submission. Valid in the USA only to legal residents 21 or older. State law will apply. Not valid with any other offer. Allow 2-3 weeks for processing.