Data is presented that compares the Rapax Hulk spring to the 75N SB stock spring, 150N SB spring, and Rapax 2.8J spring.
We look at the effect of the hulk spring on a stock Tac-41 and a mostly stock Tac-41 with the silverback advanced piston head.
Tried adding sound clips, do not think it worked out very well, the louder shot actually sounds quieter.
Негізгі бет Silverback Tac 41 Upgrade Series 4: The Rapax Hulk Spring
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