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GBB vs ATF (美國管酒精,煙草及火器之部門)

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原帖由 theloggoo 於 7-6-2010 13:09 發表
用真鎗上身加GBB下身, 咁都諗得出, 依D只係D "真數鎗身" 牌子嘅問題, 同埋真係咁SET打真子彈, 我諗要係後面揾番條BOLT, 仲唔知自己膊頭入晒, 定爽穿左...
Well, a real AR wasn't direct blowback to recycle(or Recoil Operation), it's a gas operate(and rotation bolt locking, the primary recoil force wasn't produce from the action by the bolt carrier recycle.

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