Whatever you do . Dont get any after market piston kit to mod a DI system . More trouble than its worth.
Got an Ares setup about 3 years back. Took about 30 minutes to change out. Fired about 300 blanks, and a few thousand wolf fmj ammo no problem. My only issue was I couldn't mount my triangle handguards over it without filing some plastic off.
"Democracy is two wolves and one sheep voting on what to have for dinner.
Liberty is the well-armed lamb contesting the vote." - Benjamin Franklin