I will be probably the only person to say this, but I wouldn't. I have both. The MP5 is cool and all, but I honestly shoot the Norrell 10 to 1 now that the "newcool" factor of the MP5 has worn off. The MP5 sear will probably go up more in the future (I wouldn't think it would go up past the point it is at, $30000 is insane for one, but I have a poor track record on being right about that as I said the same thing at $5000 and $12000 and $20000 so.......) as it has a versatility the Norrell does not, but the Norrell is the only machinegun that I have sold and then repurchased because I regretted selling it.
Norrell will be the last machinegun I sell.