-We’re blowing out our handguards because we have so many. The Emergency Liquidation handguards are mystery boxes that will vary in completeness and may be missing bolts, screws, or barrel nuts.
-Ar uppers are of a variety of designs. The AR/M4 uppers are milspec. The modular uppers are not and may interfere with other non-standard features like anti-rotation tabs.
-The regular FA BCG is good to go.
-The Blem BCGs do not use grade 8 bolts to secure the gas key. You may need to replace these later on. We have tested several hundred rounds without issue but YMMV.