drop-safe shotguns - Page 2

RMcL · June 18, 2014, 11:58 AM

The internal hammer on the Mossberg 500/590 does have a safety stop not found on other slide action shotguns. This safety stop is analagous to the safety stop on the hammer of the series 80 Colt Govt. Model. The function of the safety stop in both cases is to stop the fall of the hammer should the full cock notch on the hammer fail to retain the hammer.

Here is how to check this function on the Mossberg 500/590 series. With the unloaded shotgun, pull the trigger to drop the hammer on an empty chamber. Then open the action approximately 3/8th of an inch then close it again. The internal hammer will now be held back by the safety notch. If you pull the trigger at this point the hammer will be released fron the safety stop and fall with very little spring impetus.

Slopemeno · June 19, 2014, 12:19 AM

The security of the hammer isn't the issue here.

The firing pin is free to move forward when dropped on the muzzle or butt.

RMcL · June 19, 2014, 04:33 AM

"...The firing pin is free to move forward when dropped on the muzzle or butt."

Slopemeno:

That is true even with transfer bar systems with low mass firing pins.

See the transfer bar mechanism on page two:

http://www.hr1871.com/documents/manu...GUN_MANUAL.pdf

June 18, 2014, 11:58 AM	#26
RMcL Senior Member Join Date: May 7, 2006 Location: Alabama Posts: 273	Mossberg has a hammer safety stop. The internal hammer on the Mossberg 500/590 does have a safety stop not found on other slide action shotguns. This safety stop is analagous to the safety stop on the hammer of the series 80 Colt Govt. Model. The function of the safety stop in both cases is to stop the fall of the hammer should the full cock notch on the hammer fail to retain the hammer. Here is how to check this function on the Mossberg 500/590 series. With the unloaded shotgun, pull the trigger to drop the hammer on an empty chamber. Then open the action approximately 3/8th of an inch then close it again. The internal hammer will now be held back by the safety notch. If you pull the trigger at this point the hammer will be released fron the safety stop and fall with very little spring impetus.

June 19, 2014, 04:33 AM	#28
RMcL Senior Member Join Date: May 7, 2006 Location: Alabama Posts: 273	"...The firing pin is free to move forward when dropped on the muzzle or butt." Slopemeno: That is true even with transfer bar systems with low mass firing pins. See the transfer bar mechanism on page two: http://www.hr1871.com/documents/manu...GUN_MANUAL.pdf Last edited by RMcL; June 20, 2014 at 08:56 AM.

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June 19, 2014, 12:19 AM	#27
Slopemeno Senior Member Join Date: January 19, 2007 Posts: 2,663	The security of the hammer isn't the issue here. The firing pin is free to move forward when dropped on the muzzle or butt.