XPB Low Mass BCG
The Sharps BCGs are in my opinion some of the best in the industry (honestly my favorite). This weighs 9.6oz compared to 11.2 of their nickle boron version. Not quite as light as some other steel low mass bcgs but close. Super reliable, functions perfectly. I've never had a single issue with any of my Sharps bcgs, including this one. Great option for any build other than a super budget gun.