The .22 weighs in at 7lb as you see it in the last two pictures. I have a 300AAC upper from Diamondback that I also use with the Spikes lower. I use most of the same style accessories like the sights, light and thumb rest so the muscle memory doesn't change. If you didn't notice, the dustcover has 300 AAC engraved on it. I had it done to all my uppers (.22, 5.56, 300 AAC, 7.62) so I have a visual reminder of the specific caliber on the upper I'm using at the time.