Don't do it. The Bren is a far more advanced platform with a better Barrel (Cold-Hammer -Forged), superior ergonomics (Bolt Release in Trigger Guard), less perceived recoil, and more. The Bren2 is also a 50-year newer design, with use of advanced synthetics (Carbon Fibre Reinforced Polymer), and metallurgy. Don't take a step back in time unless you dig disco shoes, in which case the Famae SG rifles may he for you! With the newer Famaes you will have to embrace that Buttstock Retention Post designed to thwart underhanded Bolt Carrier manipulation by tearing open hands!