Husker88
20g
I bought some of these as an additional safety feature for me while handling / moving firearms. American made in Florida. I found that the shotgun unit also fit my Rossi RS-22 rimfire rifle.
www.triggersafe.us
Maverick 88:

22LR:

The one for AR-15's fit my AR-10, but since the Smith & Wesson M&P Sport has ambidextrous safety, mag release and bold release, the mag release interferes ever so slightly with the TriggerSafe. A little trim with the Dremel will fix that without compromising the fit at all.

They're not very expensive so I bought one for the long guns I have.
Triggersafe LLC
TriggerSafe is a unique, patented device designed to safely cover the trigger of AR15 rifles, Remington shotguns and now a Glock Staging holster. Designed to avoid negligent discharges during times when you do not have positive control of a loaded rifle or shotgun during hunting, training, range tim
Maverick 88:

22LR:

The one for AR-15's fit my AR-10, but since the Smith & Wesson M&P Sport has ambidextrous safety, mag release and bold release, the mag release interferes ever so slightly with the TriggerSafe. A little trim with the Dremel will fix that without compromising the fit at all.

They're not very expensive so I bought one for the long guns I have.