Silentassasin Posted January 9, 2014 Share Posted January 9, 2014 Hello all can anybody suggest what hop up I should put in my ics m4 to replace the standard one. I have a madbull ultimate 6.01 barrel on the way and it seems silly to keep the standard one hop in. thanks joe Link to comment Share on other sites More sharing options...
Mack Posted January 9, 2014 Share Posted January 9, 2014 Unless your prepared to mod it heavily none will fit. ICS M4 hops are proprietary Edit: Although I dont see why you would want to change it as ICS m4 hops are one of the better chambers you can get Link to comment Share on other sites More sharing options...
Silentassasin Posted January 9, 2014 Author Share Posted January 9, 2014 Right ok that solves that problem then. The one I have is broken as im rebuilding an old dead gun! So thought it was the perfect time to swop it out. I will purchase one of the 2 for sale on the forum thanks. Link to comment Share on other sites More sharing options...
Hibernator Posted January 9, 2014 Share Posted January 9, 2014 Unless your prepared to mod it heavily none will fit. ICS M4 hops are proprietary Edit: Although I dont see why you would want to change it as ICS m4 hops are one of the better chambers you can get What Mack said Nothing wrong with ICS hop units, but a new rubber and nub would help. If you modify a non ICS hop, you'd probably need to replace your nozzle too. Link to comment Share on other sites More sharing options...
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