Darth Id said:

Yes because "real" lasers have so very much recoil...

The blasters in the original trilogy were mostly real working guns that shot blanks, so that there would be muzzle flash and smoke.

You can see that in behind-the-scenes footage, blooper reels, deleted scenes without effects, etc. ANH, ESB and ROTJ.

This includes the Stormtrooper blasters, Han's, Leia's and Luke's blasters, and only shot (no pun intended) at Elstree. The Rebel blasters and blasters used on location outside the UK were casts or built from gun replicas.