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M4 with GBLS Dynamic bolt action!
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December 8th, 2015, 09:31
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SuperHog
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Join Date: Jul 2011
Location: Toronto, Ontario
The bolt is a cosmetic shell made of plastic or thin alum uses little energy to pull back. 99% of the work on the motor is the spring. The bolt just rides with the spring.
Last edited by SuperHog; December 8th, 2015 at
09:38
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