/thread revive:
I ended up snagging an unfired Centurion 16" LW on the EE for a smoking price and building an upper out of it. Out of the box I checked it with pin gauges and confirmed it to be .080". Got on BRT's website right away and ordered a microtune gas block with the .071 insert. I've read that some think this is too small; however, DD 16" mids have been confirmed to run .073 and Colt 6960's are confirmed at .071, so I figured I was safe. Ended up doing a test fire yesterday and the bolt locked back on Winchester .223 white box, AE .223, and AE 5.56. Recoil was incredibly tame with the .223 loads, and similar to a mil-spec 14.5 carbine with the 5.56. Each ammo type was tested in incremental loadings of 1 round, 2 rounds, 3 rounds, 5 rounds, then 9 rounds.
BCM blem upper
BCM Mod 4 charging handle
Centurion 16" mid LW 556 barrel
Centurion BCG
Centurion 14" CMR Gen 1
BRT gas block
.071 insert
A2 FH
H2 buffer
Sprinco blue buffer spring
In heavenly love abiding, no change my heart shall fear;
and safe is such confiding, for nothing changes here:
the storm may roar without me, my heart may low be laid;
but God is round about me, and can I be dismayed?
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