-15.1” Douglas 1:7 twist contoured for ops/aem5 made by Compass lake engineering with their chamber specs.
-compass lake headspaced match bolt
-BCM upper that was thermal fit to barrel
-Larue 13.2” handguard. Barrel nut torqued to 45 ft/lbs and then aligned to next gas tube hole. (Two small dings where my wrench slipped on the outer nut but doesn’t affect usability)
-otter creek brake and collar with provision for pin and weld.
-AEM 5 not included
-just under 200 rounds on the upper