Muddydog, (and everyone else too) The following is from the Maine Laws on line

3. Automatic firearm (a firearm that continues to fire as long as the trigger is held back). It is unlawful to hunt with or possess for hunting any automatic firearm.

4. Auto-loading firearm (a firearm which reloads itself after each shot and requires a separate trigger pull for each shot). It is unlawful to hunt with or possess for hunting any auto-loading firearm which has a magazine capacity of more than 5 cartridges,* unless the magazine has been permanently altered to contain not more than 5 cartridges . (Note: This provision does not apply to .22 caliber rimfire guns or to auto-loading pistols with barrel lengths of less than 8 inches). *Plus 1 in the chamber for a total of 6.

so your levers are legal Muddy