pamparius Posted December 15, 2011 Report Share Posted December 15, 2011 Hi, I am wanting to install Madbull DD RIS II http://madbull.com/catalog/index.php?main_page=product_info&products_id=391 into my Inokatsu M4A1, but I am not really sure about the compatibility since the rail system is made for AEG, so I wonder if there is any other work needed especially for the Delta ring fitting into the receiver or it just fit in perfectly without modification, anyone ever tried this? Quote Link to post Share on other sites
kimkafwan Posted December 31, 2011 Report Share Posted December 31, 2011 The ris will fit, the barrel nut won't. You'll need this http://madbull.com/catalog/index.php?main_page=product_info&cPath=5&products_id=103 Quote Link to post Share on other sites
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