The red dot that worked well on the AR but failed quickly on the 454 lever action has what I consider to be a weak design in the battery compartment. The 3 dimples in the bottom were slightly flattened, maybe due to the recoil. The rectangular rubber ring that I assume is to act as a spring, failed to keep the battery in contact. I put a small dot of solder on the bottom, and it's now functional, though probably only on very light recoiling firearms.
The 454 now has an Ultradot with what I consider a superior battery contact design. Still has the 3 dimples on the bottom, but a better spring to maintain contact. Time will tell if it withstands the recoil.
My AR and Cetme both have PA 1-6X scopes with illuminated, when required, reticles. Sure would like to have the same type on the 454, but with an 8 inch eye relief. So far haven't found one that is slim enough to mount on a top ejecting lever action.
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