Selling my used MK111 MOD 2-M Upper .223 Wylde w/ SiCo brake. About 400rds give or take through it. Only selling because I have a flow through can and it doesn't really aid in a piston system. If you have a full back pressure can, this system will greatly benefit you. $800 cash or $900 trade ftf NW Lakeland. Text at 7 two 7 2 eight two 6 8 two seven.