Hey Kid, do me a favour and measure that PDI 150% spring. The only ones I've come across in the past few years that are true 150% springs (350fps) measure 6 3/8" long, and have a blackish brownish metal finish. The shitty ones are generally 6 5/8" to 7" long and have a dark gloss black finish. That'd explain why the gun can't turn the mechbox over, and why I strongly discourage everyone from going with PDI springs (even the ones for sniper rifles, I bought a 300% and it damn near ripped my CA M24 apart, even after I cut off a half dozen coils.) The latter spring in a V2 mechbox will destroy it within a few hundred to a thousand shots.
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