Will my #### fall off if I don't get one of these?

You only absolutely need them when you are running LMT 10.5.

Nice to have on 14.5 - but most of the time an O-ring alone will do the job if it is not working.
 
FWIW I use either the D-Fender or O-ring in all of my AR's (10.5 LMT, 14.5 Armalite, 16" LMT, and 20" RRA) and have never had an issue with extraction.
Before I installed them I asked KevinB his thoughts and was told it was a very low cost insurance policy. Can't argue with that.
 
please excuse the question..

"insurance policy" against what?? I have a RRA 20" , would this type of upgrade give me any benefit above the factory one??
 
on a related note, I would do horrid, unspeakable things for a complete BCM rifle, and dirty, depraved things for parts thereof...
 
Back
Top Bottom