DC-31 Magazines for Drum Uppers

30 Round DC-31 Drum Upper Magazine #621

$65.00

Backordered- Add to waiting list The DC-31 Magazine is an after-market replacement for the ZMAG-S. It is manufactured using a ZMAG-30 and will still have "ZMAG" stamped on the side (as seen in pictures). The addition of a tab is what allows it to be used in our drum fed Upper Receivers. This magazine works in the MAX-31 mk2, MAX-31C, MAX-31A mk2, MAX-31k, MAX-10/31 and MAX-10/31k.

Please note that due to this magazine being an after-market product all product and warranty inquiries will be directed to Waymaker Machine.

IMPORTANT INSTRUCTIONS for your new Shockwave Technologies ZMAG’s or DC-31 Magazines : The ZMAG is a “self-leveling” magazine. Since DC-31 magazines are made with ZMAG’s they are also self-leveling. The ZMAG’s were designed to ensure that the bullets sit as high as possible so the bolt strips them from the magazine reliably. Due to this design the feedlips on the magazine may rub on the bolt. If your bolt closes when you insert the ZMAG or DC-31 magazine, you’re good to go. There are situations where a ZMAG or DC-31 magazine might sit too high in a particular firearm and the bolt hits the feedlips and stops. To remedy this, on an empty magazine, hand cycle the bolt about 50 times. This can easily be done by holding the trigger down and quickly working the bolt back and forth. Once the bolt freely clears the feedlips the magazine has been self-leveled and you are ready to shoot.