I have an 18 inch DPMS barreled ar10 that I shout suppressed. I use a adjustable gas block (don’t remember what brand) to restrict the gas flow. I broke a bolt catch initially after getting the gun together. That was probably my fault for using an ar15 specific catch- you must use an ar10 catch which is a little beefier. I also had the gas open all the way which contributed to it breaking. Since replacing that and turning down the gas it has been fine.