To any of you who use Bio-degradable bb's...
The last few times a buddy of mine has brought his G&P M4 and used the P-force brand bio-degradables in his mid-caps, they have started to decompose very quickly.
So fast that they weren't feeding properly. We emptied all of his P-force bb's out of the mags and used the KSC Perfect bb's and it instantly fixed the problem.
Buyer beware of the P-force bio bb's.
They may be good bb's in a cooler climate, but here in the 'valley of the sun' they don't seem to be the best bb's to use, in my opinion.
If you want a good bio-degradable bb, then go with the G&G bio's.