Error! You must javascript enabled to use this form. Please enable Javascript in your browser. Lockhart Tactical UBS-12 Under Barrel Shotgun 12ga The UBS-12 (Under Barrel Shotgun 12 Gauge) is a door breaching shotgun system manufactured by Lockhart Tactical. View full press release Your Name: Your Email: Subject: Question: ReleaseWire respects your privacy, the information you entered above will not be used to send unsolicited email, and will not be rented or sold to a 3rd party. Your contact information will be shared with the recipient of this message - Privacy Policy Send