Thanks for the explanation, looking at T4A's PRS1... Not sure which, yet.Short answer, yes. There are some differences though, and the actual stock your interested in matters. Most notable difference are the bolt handles. They’re both slightly swept, but quite different in shape. For some chassis, like newer AI’s, it won’t matter because the bolt handle cutout is generic. Traditional stocks tend to follow the bolt much tighter, and follow it’s lines.