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The TechT MRTv2 (MASS REDUCTION TECHNOLOGY)
Invert Mini Bolts have been engineered with efficiency and consistency as the
most crucial design elements. Over the last few months we have tested
many different crazy looking super light bolt designs and had
mixed results. After long months of testing on the field and shooting over our
high precision chrono, we found that using the stock type bolt face oring as
well as having no cuts between the two rear orings yielded the best consistency
and efficiency.
My results found that removing the stock-type
face o-ring and replacing it with a standard o-ring reduced our velocity at any
pressure and dwell by about 15-30 fps and decreased consistency. We think its
because the stock type o-ring seals in the barrel really well. We also found
that placing a groove between the two rear orings for added weight reduction
actually decreased consistency. Instead of a standard deviation of between 3-4
FPS with no groove, we got a standard deviation of about 15 fps with the groove.
The
MRTv2 Delrin
is about 60% lighter than stock
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