The aluminum receiver BLRs are more than strong enough to handle whatever abuse, as well as ammo pressures. Some oldtimers have a hard time accepting aluminum recievers in a high power rifle. The steel receiver BLRs are Belguim made, the aluminum Japan made. They are both of excellent quality. I think the steel receiver guns are not as attractive due to narrower receiver which makes the magazine hang way down below the receiver, an eyesore IMHO. The newer aluminum recievers are wider, and the magazine is flush with the bottom. You really can't go wrong with either. It's a great design with multiple lugs tying directly with the barrel making this gun a lever opperated bolt action, VERY strong.