I have 13 Umarex HDS68 shotguns for sale. 5 have had the valve block modified to increase the velocity of the marker. 7 have not been modified. All will come with the quick pierce cap required for operation, but not shown in the pics.
$85 each shipped CONUS Group deals will be considered.
The stuff I shouldn't have to say but must:
I am not a dealer, broker or any sort of business. I'm a habitual Tinkerer. I love to restore/repair mechanical markers and return them to good use. These are excess in my collection. These are used/ refurbished markers. I have fixed any springs or Oring issues. Replaced broken or missing parts. I cannot give an unlimited warranty on any used product. If you have an issue with a marker I sell you, I will do my best to fix the problem. If you disassemble the marker before contacting me, I will advise on repair, possibly help with minor parts, but will not assume any responsibility for the issue. The valve mod is the procedure that The Inflicted posted on Youtube.
A few things to know about these markers before you purchase:
1. CO2 capsule is installed nozzle facing out. Pierce mechanism is in the cap.
2. Only install the quick pierce cap hand tight. NEVER use the Allen wrench to tighten. This will break the bond holding the CO2 pressure chamber, causing leaking or blow off. Activate by tapping the bottom of the pierce cap.
3. NEVER try to unscrew the cap under pressure. Same as installation, bad things happen. Push the pressure relief/pressurized pin first. This pin pops up when the marker is pressurized.
4. This marker is currently set up for 12gram use. Velocity will decrease with the number and speed of shots. There is a constant air adaptor that will allow HPA or bulk CO2 use. Meaning you can get better shot consistency.
5. This marker has the option to fire one barrel at a time or both at the same time. Understand that you have the same amount of gas used for each of those 2 choices. That means if the mod is set for single barrel 265 to 280 fps, firing both at the same time will be in the 200 to 220 range. If you set the mod to fire both barrels at 265 to 280 fps, then the single barrel option will be above 300 fps. Factory setting (unmodified) is low 220s single barrel and below 200 double barrel. I have set the mod for single barrel use.
$85 each shipped CONUS Group deals will be considered.
The stuff I shouldn't have to say but must:
I am not a dealer, broker or any sort of business. I'm a habitual Tinkerer. I love to restore/repair mechanical markers and return them to good use. These are excess in my collection. These are used/ refurbished markers. I have fixed any springs or Oring issues. Replaced broken or missing parts. I cannot give an unlimited warranty on any used product. If you have an issue with a marker I sell you, I will do my best to fix the problem. If you disassemble the marker before contacting me, I will advise on repair, possibly help with minor parts, but will not assume any responsibility for the issue. The valve mod is the procedure that The Inflicted posted on Youtube.
A few things to know about these markers before you purchase:
1. CO2 capsule is installed nozzle facing out. Pierce mechanism is in the cap.
2. Only install the quick pierce cap hand tight. NEVER use the Allen wrench to tighten. This will break the bond holding the CO2 pressure chamber, causing leaking or blow off. Activate by tapping the bottom of the pierce cap.
3. NEVER try to unscrew the cap under pressure. Same as installation, bad things happen. Push the pressure relief/pressurized pin first. This pin pops up when the marker is pressurized.
4. This marker is currently set up for 12gram use. Velocity will decrease with the number and speed of shots. There is a constant air adaptor that will allow HPA or bulk CO2 use. Meaning you can get better shot consistency.
5. This marker has the option to fire one barrel at a time or both at the same time. Understand that you have the same amount of gas used for each of those 2 choices. That means if the mod is set for single barrel 265 to 280 fps, firing both at the same time will be in the 200 to 220 range. If you set the mod to fire both barrels at 265 to 280 fps, then the single barrel option will be above 300 fps. Factory setting (unmodified) is low 220s single barrel and below 200 double barrel. I have set the mod for single barrel use.
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