I have a matched set of custom-built stainless steel Marlin 1895 rifles. Please identify available (steel or stainless steel or titanium) quick-detachable detachable side mount assemblies for 25.4 and 30 mm telescopic sight [main tubes]. What I seek is an over-the-bore mount that, when detached, leaves receiver's top completely free and clean. While I am unaware of a top mount assembly for M1895s that will, when detached, leave receiver's top completely free and clean, if such is available, let me know about it, also.