There are 2 reasons I like the Tac-14 over the shockwave.
1) the safety (makes adding an arm brace actually useful)
2) pre tapped for an optic rail, and can put on an RMR or similar Red Dot
The Shockwave is pre tapped for a rail.
I thought it was the tac14 that came pre tapped.
Mine came pretapped as well. The tac14 I looked at did not come pre tapped for an optics rail.Not sure but my shockwave was.