No Bull: The Ajax Profile
Our new Ajax profile barrels are bigger and badder than a bull barrel. The OD measures one full inch at the custom-made gas block and 1-1/16" under the handguard. Our current test models are both 24" long, made from stainless steel, spiral fluted, and fitted with custom Achilles Arms muzzle brakes. One is chambered for the 5.56x45mm NATO round, and the other is chambered for the 6.5mm Grendel round.
When Size Matters
When used for a 5.56mm caliber barrel, the Ajax profile has a cross-sectional area at the gas block 15% larger than a 0.936" diameter barrel, 33% larger than a 0.875" diameter barrel, and a whopping 87% larger than a 0.750" diameter barrel.
Firing the 5.56mm Ajax Barrel
We put the custom muzzle brake on the 5.56 barrel and shot some American Eagle 55 grain FMJ rounds out of it.