Negative.
Went from McM A5's to JAE chassis's and never looked back. Q
Pro's to chassis's, and specifically JAE:
- No need to bed. Can take barreled action in and out of chassis with no POI shift.
- Out of the box adjustability - cheek piece height adjustment (and it actually stays put once adjusted, unlike the McM cheek pieces), LOP (though not rapid with JAE), etc
- Can adjust mag well and seating height to accommodate different mags and optimize the mag system for your setup
- Excellent accessory support from OEM (ARCA rails, picatinny rails, NV bridges, bag riders)
- comfy AF. While this is subjective, I think the JAE is comfier than anything else out there, stock or chassis
I got sick of all the work that needs to go into a stock if you want to change anything up. Decide to change or upgrade actions? Take it to a gunsmith to tear out and re-bed the chassis. Want to add an ARCA rail? Take it to a gunsmith for stock work. NV bridge? Gunsmith. Need more QD flush cups for slings? Take it to a gunsmith.
Chassis's are plug and play, and are versatile right out of the box. I have no need to go back to a traditional fiberglass stock, though I still have a McM A5 stock on a TacOps rifle. I've also got a KRG Bravo chassis for the wife's rifle, and I've been really impressed with that chassis as well.
To each their own, but overall I believe chassis's provide much more value for the money than traditional stocks do. If a chassis isn't comfortable enough for you, you just haven't found the right chassis.