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For: G&G QD Sling Mount for M4/M16 Retractable StockProduct Information:
I purchased this to mount on my G&G GR-16 CQB S which has a crane stock. I quickly learned that this is not intended for use on the crane stock just for the retractable stock (as the title states). Fortunately it will work on a crane stock but it does require some dremel work to create a gap for the wires to go through into the stock tube. I also had to do a little bit of dremeling to get the stock nut to fit. The good news is that once I got it installed and used some blue lock tight on all the threads it COMPLETELY eliminated the stock tube wobble notorious to the G&G GR-16 series.