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gp urx middle

check out my old photos in the PTW美砂酮中心 (P.3)
GP barrel nut spec.(Marui toy spec.) is larger than the PTW/RS receiver spec.
so gp urx barrel nut will fit ptw upper well.
Hope it helps

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回覆 5# 的帖子

No mod. is needed!!
but you need a GP urx installation tool.

I used 7" gas tube and blocks inside the URX.

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回覆 8# 的帖子

yes, you can
but i don't think it is secure...

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