I have had the M500A forend on my AR and thought it was bright enough for lighting the living room for home defense if necessary, but took the plunge and ordered a TX-4 replacement head.
It arrived yesterday, I unscrewed the Surefire xenon/halogen gas-filled lamp assembly and screwed in the TX-4 LED and lit 'er up.
I mean, HOLY MOLEE!!!
If you have an M500 forend and are thinking of replacing the head - just do it.
The TX-4 Cree LED is a direct drop-in no-adapter replacement, and you will NOT be disappointed.
Glad you like the TX-4 GrobDriver
I have over a half dozen M5xx forends, and everything but the turboheads wear a TX-4. Hell, I've become such an enthusiastic evangelist for them over the years I've actually been accused of being an employee of TNVC
I'm not a TNVC employee, by the way-I'm just a strong believer in their products
The TX-4 LED has saved my beloved M500s from obsolescence-I've standardized on them for all of my defensive and training ARs.Posted Via AR15.Com Mobile
I have one on my surefire G-2 body, Gear Sector mount, and yeah it does kick some ass.