Hello everyone, New to this forum, not new to the firearms community and forums in general. Just picked up a Keltec RDB-Survival and had a few questions. First; the recoil spring. My recoil spring extends out past the op-rod, whereas all of the pictures online I have seen show the the recoil spring guide extending about 6-7" out from the op-rod but the recoil spring is inside and not visible. My recoil spring and recoil guide are captured still, but extend out farther than others I have seen. It still collapses to the same overall length. Function is fine though. Second; the weird rear pic rail screw that has the flat ovalish shaped washer under it. I went through and removed and thread locked all of the screws on this gun because I have seen numerous people complain about various screws backing out. The rear screw on the pic rail was very tight from the factory. Reading on this forum it seems though that it is not supposed to be to help prevent vertical stringing. That makes sense based on the design. Mine though has a small round spacer underneath the flat oval washer that seemingly prevents you from accidentally tightening down too hard on the thin washer. I tightened it back to a normal hand tight level that you can achieve just using thumb and index finger and a small hex wrench and used heat resistant rocksett, which is my preferred heat resistant product vs red loctite. Thoughts on this? No significant issues during shooting. Completely reliable. Accuracy is fine, had some horizontal POI group shifts initially using some different M193 clones but that seems to have settled down to consistent repeatable POI. I will say there is a very large POI shift between suppressed and non-suppressed (as an aside, what a PITA to remove that hokey front sight). 4" low at 50 yards going from suppressed to unsuppressed. Little more than I am used to. Anyways, thanks for your help in answering these questions.