Should I get the CMMG or ST22 M4 dedicated .22lr upper?

I have the spikes on order with the walther barrel but I don’t want a heavy barrel no matter how accurate it shoots. Reports I’ve heard say the walther barrel makes minimal difference in accuracy.

I have the ST22 SD already, should I get the CMMG .22lr just for the difference in models or stick with Spikes and get the ST22 M4 with the walther barrel? I was thinking of cancelling my order with ST and getting the CMMG. The price and the heavy contour barrel being the main difference.

Aren’t the Walther upgrade barrels government profile?

Yes they are.