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Posted: 3/27/2002 4:59:33 PM EDT
what is the difference between the Red and Yellow Blank Firing Adapters?  New design? (back in my day, all we got was red!) Different gas metering?
I see yellow a lot on M4's and Red on the M249's in pictures.
Link Posted: 3/27/2002 5:49:15 PM EDT
I was wondering the same thing. My guess would be yellow offers better visibility than red (which can look brown under certain lighting conditions).

???
Link Posted: 3/27/2002 9:13:22 PM EDT
ive used them both and could not tell a difference although i wasnt able to hold them up and compare.
Link Posted: 3/28/2002 2:10:15 AM EDT
Red is for M16 rifles, yellow is for M4 carbines-my understanding is that differing levels of pressure are needed for the weapons to function reliably and to account for the differences in barrel length.
Link Posted: 6/10/2002 12:46:31 PM EDT
The yellow BFAs for the M4s have a larger hole to allow more gas to assist in cycling. Firing semiauto, you won't see a difference. Full auto is were the benefits are noticed. 20" barrels have a long enough gas tube so no difference is noticed.
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