What's the difference between these crush washers ?

[G19A3]

What's the difference between these:

BROWNELLS AR-15 1/2' CRUSH WASHER | Brownells
https://www.brownells.com/rifle-parts/barrel-parts/rifle-barrel-hardware/washers/ar-15-1-2-crush-washer-prod81259.aspx


TACFUN 12 PCS Steel Crush Washers for 1/2" x28 Thread Muzzle Device Alignment Pack of 12 https://www.amazon.com/dp/B075LQ2ZRC/ref=cm_sw_r_u_apa_glt_fabc_KMHK8GEDEWN63896R1B8?_encoding=UTF8&psc=1

[Screwball]

The Amazon ones are thicker… or so the estimate in the one review says. Talking 0.03” of a difference, if it matters.

[AndyLate]

One is sold by a company that financially opposes the second amendment, one is not.

Andy

[lysander]

That still might be within the acceptable tolerance . . .


EDIT:

Yup, the acceptable height variation is .028"

[DwayneZ]

One is sold by a company that financially opposes the second amendment, one is not.

Andy
This.