Birthday Range Time (TulAmmo Testing with BCM 14.5 upper)
So the interwebz says no go on the TulAmmo or equivalent on 14.5 middy uppers. Here is my own test results (100 rounds). AR Specs:
Spartan 15 Lower (Joe Bob Outfitter)
BCM 14.5 Midlength Lightweight Upper with 1.5 pinned Battle Comp, Centurion Arms Quad Rail
BCM BCG
USA Laser Engraved Dust Cover
Gas Buster Charging Handle
CMC Trigger (3.5 single stage)
Phase 5 EBRv2 (Bolt Release)
RadLock Mag Release
FDE BADASS (safety selector)
FDE Magpul BUS
FDE Fab Defense Mako Stock
FDE Fab Defense IDF Pistol Grip
FDE Hex Mags with Black Magpul UBBT attachment
FDE Ladder Rail Covers
FDE Fab Defense PTK (Ergonomic Fore Grip)
Black Fab Defense VTS (versatile tactical support)
HOLOSUN Red Dot HS403g
Condor Multicam Two Point/Single Point convertible sling