Originally Posted by mike9316
Hello I'm a new AR owner so I'm learning as I go I have a rock river arms entry tactical and I was wondering if a WMD or spikes tactical nickel boron coated bcg would fit in my rifle the tail end of the nickel boron bcg looks a little longer so I was worried it wouldn't fit. Any input welcomed
If it is a 5.56/223 BCG it will fit. Is it possible your looking at a standard BCG , or a light BCG , sometimes to people that don't have a lot of experience will think they are different sizes. Here's some pics for example. As far as the nickel boron coating, I have two nickel boron Fail Zero BCG's, I love them for the ease of cleaning. Other than that, to me the performance is the same.