Contact information

RJK Ventures' goal is to provide you with great products, great service and a friendly transaction.  If you have questions, comments or suggestions about our products, or are looking for status on your order, feel free to contact us.  Our goal is to provide same-day response to all emails.

© 2023 RJK Ventures LLC. All Rights Reserved. Tthe RJK Ventures logo. Mag|Coupler, magcoupler, CA Drum, California drum and the Mag|Coupler logo, are trademarks of RJK Ventures LLC, in the United States and/or in other countries. Other brands, products, or service names mentioned are or may be trademarks or service marks of their respective owners.  Notice: This content is for informational purposes only and does not set forth any warranty, expressed or implied, concerning any equipment, equipment feature, or service offered or to be offered by RJK Ventures LLC. RJK Ventures LLC reserves the right to make changes to this document at any time, without notice, and assumes no responsibility for its use. This informational document describes features that may not be currently available. Contact a sales office for information on availability. RJK Ventures LLC is neither a firearms dealer nor buys-sells firearms.

Customer Service E-ail:

Use the Customer Service e-mail for questions about an order you have placed or received.  Please also use this address to obtain a RMA # for approved returns.

Warranty Information:


RJK Ventures LLC
26895 Aliso Creek Road, #B-293
Aliso Viejo, CA 92656