Hi Guest. Welcome to the new forums. All of your posts and personal messages have been migrated. Attachments (i.e. images) and The (Old) Classifieds have been wiped.
The old forums will be available for a couple of weeks should you wish to grab old images or classifieds listings content.
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TM 5.7: Plastic, light, fairly reliable in cold weathers, easy to find spares/mags, can handle temperature fairly well, ris. Excellent guns overall.
KWA PTP: Metal, Real weight, very reliable in cold weathers, can handle propane, more robust (but harder to find spares), ris (depending on model). Excellent guns overall.
oh and remember that many CO2 guns are way over site limits...