Just wanted to say thanks to Tom for his advice yesterday to a question I'd posted on ARFCOM...I was upgrading one of my ST rifles to the free float BAR rail system. To say the least, I didn't quite get it right initially...so I posted the question. The answer came quickly and by none other than Tom himself. Very impressed. Needless to say, the rifle came apart and the BAR got installed correctly. Another reason why I'll continue to buy Spikes...