Amoeba am007 短M4 改長管 or Inner Barrel Extension

小弟想將支Amoeba am007 短M4 改長管 - 主要想射得直D ~


想問G&P呢set野改落去岩唔岩用呢?
http://airsoft.tiger111hk.com/p23511/G&P-Inner-Barrel-QD-Extension-Front-Set-for-M4-AEG-Series/product_info.html?language=hk

另外其實都有諗過加隻ARES Amoeba 136mm Mock Silencer Inner Barrel Extension
http://www.evike.com/products/48672/

另外就係Magdog Inner Barrel Extension, 有無Ching Try過Inner Barrel? 成效點呢?

thanks各位師兄解答~