View Full Version : Galati XM177 Upper Question Regarding Shooting 5.56

06-09-2012, 11:04 PM
I have had this XM177 upper from Galati International for quite sometime and have put several rounds of 223 down the barrel. I would like to try some 5.56 surplus I picked up, but wanted to make sure it is safe to shoot. I bought the upper back in 2009 from Galati. I checked the barrel markings and all I see is "M1S 1/9" stamped on it; no indication of whether or not it shoots 5.56 let alone even indicating 223 on it. I am guessing this barrel is from Model 1 Sales and is the supplier to Galati International.

Does anyone have any experience with Galati uppers and shooting 5.56 through them? The barrel is chrome moly in my assembly.

06-12-2012, 7:40 AM