Download our 50 Round Drum Manual by clicking on the link below:
http://www.mediafire.com/?uyj3yyryhqm
Drum Features: 3 in 1 drum. Built with an interchangeable feed tower. You can buy 1 of the 3 Black Dog Machine 50 Round drums listed below and have it work in 2 other models. All you have to do is purchase the drum tower only of the other 2 models you wish to convert your drum to.
10.22 50rd Drum
AR15.22 50rd Drum
S&W M&P15.22 50rd Drum
Material: Polycarbonate
We do not guarantee that the drum will work in full-auto setups.
However, many customers report that with a little fine tuning they can get the drum to work in full-auto.
Drum Tips:
**Check for bolt drag before using your 10.22 50RD drum!***
Seen on some 10.22 Drums only:
Bolt Drag: You will notice one side of the feed lips is taller than the other. We have added this material to accommodate those rifles built with higher cut mag wells. Depending on your brand of rifle, you might have a lower cut mag well. This may cause “bolt drag”. Insert the drum into your rifle unloaded. Slowly pull the bolt back a few times to see if you are getting any bolt drag, mostly on the left feed lip (taller lip). If so, you can remove a small amount of material without affecting the performance of the drum.
I CHECKED FOR BOLT DRAG AND AM STILL HAVING FEEDING ISSUES-FIND THE 10.22 DRUM ON OUR WEBSITE, CLICK ON THE 10.22 DRUM TO VIEW DETAILS. SEE LAST TWO PICTURES OF A SMALL MODIFICATION YOU MIGHT NEED TO MAKE. YOU WILL SEE A PICTURE OF THE FEED LIP WITH A "ROUNDING" MODIFICATION, THE LAST PICTURE IS A CLOSE UP WITHOUT THE MODIFICATION.
Recommended Ammunition: Federal, CCI/Blazer, American Eagle. Use a round nosed bullet. Stay away from hollow points. Ammunition not listed will not feed well in our products.
Spring Tension; Not common but can happen: If you come across feeding issues, the drum spring may be too tight causing ammo to rush up and out the tower. You may also have feeding issues if the spring is too loose. Spring tension may also be required to adjust to your rifle’s bolt speed. The manual provided will guide you through disassembly & assembly. The manual is also available as a PDF on our website.
Black dummy rounds: The plastic black dummy rounds are an important part of the drum assembly. They feed the ammo from the drum body to the tower. BDM does not recommend using dummy rounds as real bullets. Replacement parts can be purchased online at www.blackdogmachinellc.net.
Winding Rotor: Pulling the rotor counter clockwise and letting go will most likely damage the drum. It can cause the internal followers to break.