The anti-beartrap device is added to a spring powered gun sometimes in tandem or added to the gun safety so that the breach won't close abruptly smashing the operators finger/hand. This is dangerous since the gun is already cocked and the spring loaded. It is a term (bear trap) used to compare how an open breach, pertaining to spring powered rifles or pistols is like a 'bear trap' that could snap (like a trap) and catch your finger/hand as you are loading it if the safety on the gun suddenly disengages. John, the term 'bear trap' used for airguns shouldn't be taken at face value/taken literally.
