So I'm really good at getting FRT's to work in almost everything except this new maxim I bought. It uses proprietary parts such as BCG, Buffer/ Weights and gas system. So in short I can't change the Buffer spring, cannot change the gas block to AGB. The ONLY thing I can change is the buffer weights and even then they are not the traditional weight you'd expect. Can anyone give me a recommendation on whether to go H2 (4.65oz) or H3 (4.85). Im using a RB 3 position. That's where am at because I will not be using a suppressor and will only be shooting Supers (125g) . The buffer weights are expensive and non returnable so l'd like to try to get it to work from the first time. There's a guy on YT who has a 5.56 version running suppressed with H3 and he says it's perfect. Any help would be appreciated! Thank you !!