The Noveske 300 AAC BLACKOUT is NOT designed to cycle the action with subsonic ammunition unless a silencer is attached.
For your convenience we have published a set of installation instructions for this product. The instructions are in Adobe Acrobat's Portable Document Format (PDF). You will need Adobe Acrobat Reader version 5.0 or higher to view and print the instructions.
If you do not have Adobe's Acrobat Reader, you can download a free copy athttp://www.adobe.com/acrobat/readstep.html.