On Monday, May 26, 2014 9:16:25 AM UTC-7, wrote:
On Mon, 26 May 2014 07:59:02 -0700 (PDT), Tim

wrote:



Scott, that term i believe is to describe thee slide action on the top of the Colt and it's like forms....



He probabl;y means a gun with the Picatinny Rail system. That is a

universal mount for all sorts of optics, lasers and lights.



OTOH a "rail gun" is a magnetic accelerator that can get something

going real fast (like "launching into space" fast)

I could agree with that but like DI told Bill, the "Rail gun" term was used way before the accessories were even thought of.