Originally Posted by brycelarson
the SP1 and Vibe anti-chop systems come tuned and work fantastically. I've never gotten bolt stick and never chopped in my SP1. I know people who have shot case after case for years and never had a chop in an SP1. I'll give you that the Lv10 is nearly as good (although it takes user tuning and wears out over time) but as far as performance these are great.
Since they always work and need no adjustment what exactly about them is inferior?
Don't get me wrong, I shoot and love Lv10 mags, but I would certainly not claim that an easier to use equally effective system is inferior.
If you buy direct form AGD or tuna, it is already tuned. Not to mention, tuning isn't that hard. Easy as changing dwell on most markers, just swap out some carriers and rings. Also, stick your finger in the breach on the anti chop and on a lvl 10 and see which feels better.