User's Manual

CAUTION: READ ALL WARNINGS BEFORE USING OR ATTEMPTING ANY WORK ON

YOUR M-TAC. SHOULD YOU BE UNSURE AT ANY POINT, STOP AND SEEK

PROFESSIONAL SUPPORT.

Page

8. Q:What should my LPR/HPR pressure settings be?

A:LPR 70-75psi. HPR 200psi for approximately 290 fps. These are the factory shipped

pressures, as well as the approximations for 290 fps with a good paint to bore match.

9. Q:What should I do if my gun is leaking down the barrel?

A:Remove the engine from the marker, and replace all the #22 o-rings on the outside of

the engine (there's 6 of them). Sometimes even a microscopic nick can create a leak--

better to replace a 2 cent o-ring then spend hours troubleshooting your marker. Lube

the fresh o-rings with Dow55, and carefully reinsert your engine, making sure not to

slice any of the o-rings on the internal grooves in the body.

10. Q: My gun won’t shoot above 200\220\240\260 what should I do?

A: Ensure your HPR Magazine regulator is properly lubricated and its seals are in good

condition. Ensure pressures are set correctly – start with 200psi on the HPR Magazine,

and 75psi for the LPR. If none of that fixes the problem, remove the Proficiency Engine.

Use an o-ring pick to check the groove in the rear of the interior of your M-TAC. If you

find debris or chunks of o-ring replace the outer engine o-rings. If you are still

encountering problems you may need to replace your poppet, especially if it's a heavily

used marker.

11. Q: My M-TAC doesn’t seem to be efficient, what can I do to improve efficiency?

A: Ensure you're running a good paint to bore match. This is a critical factor in obtaining

velocity with the M-TAC. Ensure that your pressures are set correctly. Dwell should be

set at 6--which is stock. You can check your LPR and HPR easily with the gauge made by

Bob Long Technologies. Check the surface of the poppet for deformations and damage,

and ensure the rearmost o-rings on the Proficiency Engine are intact and lubricated with

Dow 55.

12. Q: Where can I buy a M-TAC pressure gauge?

A: Bob Long Technologies and any authorized dealer should be able to supply them.

13. Q: Are there any how-to videos on maintaining my M-TAC?

A: Maintenance videos will be available on the download section of the

BobLongDirect.com website and on our YouTube channel.

14. Q: What should I use to lube my marker?

A: Use Dow 55 on all regulator and Proficiency Engine o-rings. For the O-rings on the

bolt use Tri-flow oil. Dow 55 is recommended because it swells o-rings slightly. While

Dow 33 has been used as a substitute by some people it is not considered a

replacement for Dow 55. Dow 33 is formulated to be a bearing lube. Only Dow 55,

which slightly swells o-rings is used during the development of Bob Long Markers. The