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Olive didn't have a smooth feel when racking the charging handle doing dry fire.
Since the upper was the same as Brenda, I tried swapping the buffer and spring.
Smoothed right out.
Then I put the buffers back where they came from and left the springs swapped.
Still smooth.
The KE Arms spring is shorter than the Brownell's (10-5/8" vs 11-3/16") and wound clockwise instead of counter like all the other buffer springs.
Both are compressed some by installation, so I don't think length was a big issue.
The Brownell's spring has 37 coils, the KE Arms 38.
Both use approximately the same 0.074" thick wire.
The KE Arms spring seems to be more progressive than the Brownell's one.
KE Arms buffer is 3.2 oz. Brownell's is 3.0 oz.
The hole the buffer goes into was ground down on Olive.
Both my KP-15 lowers are blems, this could be the reason on Olive.
Brenda doesn't show any sign of such work.
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