[WA] WA m4 3-Round Burst Kit

想問下有冇師兄試過 pro-arms 隻 burst kit [url]http://shop.ehxbbyasia.com/pro-arm'S-X'-round-burst-kit-for-wa-m4-gbb.html[/url]


感覺如何? 值得買嗎?定話有其他比較好?
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