Matt,
How do you like the Spikes lower, I just bought an AAC 300 Blackout upper and was going to put it on an extra RRA lower I have, But may want something better.
Any ideas,
Bobby
All the lowers are made by 3 major compaines I think. So it really doesn't matter which lower you use. We have 5 Spike's lowers and they are all nice. If I had the money I would buy a Billet Larue lower.