Hi, namesake: 
 
I think there has been a military rifle (carbine) from the time of the Napoleonic wars in Spain and Portugal, as amended and added antique / engraving), and of course, replaced the key (lock). 
 
I confess this is the first time I meet with the "crowbar". It has many similarities with the Spanish Miqueletes. The average riding (half cock) is achieved with a projection (arch) that gets under the curve of the appendix and full rides (full cock) is achieved with an appendix spring, I imagine. 
 
The system referred to Matchlock, would not be the same, and which can be seen in some Scottish weapons? (half cock) 
 
Fernando K
		 
		
		
		
		
		
		
		
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