Easily possible! The only bits you'll have trouble with are the ICS receiver threading and the barrel.
The barrel is easy to sort - you'll notice two metal "wings" that stick out on either side of the barrel near the receiver. There are two notches on the ICS barrel nut/delta ring that they slot between when you install it. These will stop the DD delta ring going on since no other manufacturer uses those slots. They aren't need except to hold the ICS plastic handguard in place. If you're replacing the handguard, then a couple of minutes with a junior hack saw will remove them
The next problem is the receiver threading for the barrel nut/delta ring. ICS and G&P use the same threads, but no one else does. So if your DD rail has a G&P barrel nut/delta ring you should find it's a straight swap. If not, you need to re-thread your receiver. You can buy a Madbull rethreading tool, do it carefully by hand with a small file etc.. If it's a plastic M4, it's even easier. Tighten the new nut on a little bit and remove - metal nut vs plastic threads means it'll remove the excess plastic itself Repeat gradually, removing the nut every half turn to remove the plastic shavings.