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For: Airsoft GI PE M170 Spring for VSR 10/BAR 10 SeriesProduct Information:
a excelllant spring, keeps its its tension very well over long periods of time. compared to other equilalent high powered springs, this one is priced very well priced. i would deffinately suggest buyign this spring over other brands and saving a few dollars.
but this spring is not without its flaws. seeing that this spring works with the vsr-10 and clones, you must manally pull the bolt back to load the next round. even for farely strong people like myself, this spring is a pain to pull back continually.
also, most outdoor field have an fps limit of around 500fps making this spring farely illegal. this pring will make your gun shoot nearly 600fps with 0.2g bbs.
-an absolute pain to continually pull back
-illegal on most outdoor fields
-annoying to install