A Glock 19 is a pistol. The Glock 19 is their compact, 9mm, 15 round, pistol.
There are many great sources for Glock Pistol accessories. Which ones are good however will depend on what type of accessories you are looking for as well as where you are located. A great source may be to go to a Glock Pistol dealer's website and see what accessories they offer and compare with other dealers or stores in your geographical area to see which sources would be good for you.
Yes, the Glock 18 is fully automatic.
'Glock' usually refers to a 9mm pistol manufactured by Austrian arms company, Glock.
Caliber is .45 GAP (Glock auto pistol)
A Glock 45 is a semi-automatic pistol. Glock pistols are a very popular type of pistol. In particular many law enforcement agencies in the US use them.
32
One is on the trigger
32
Glock Automatic Pistol
Glock
A fully automatic pistol.