Lancer Tactical Stainless Steel Fluted Threaded 5.1" Outer Barrel for 5.1 Hi-Capa, Rainbow

If you're running a Hi-Capa 5.1 and want a more substantial look at the muzzle, or need a threaded barrel to mount a compensator or suppressor mockup, this Lancer Tactical outer barrel gives you both without breaking into the internals. It's a direct-fit replacement for the factory tube on 5.1-series gas blowback pistols, so you're not reconfiguring the whole gun—just swapping what's visible at the front end.

Material and finish. The barrel is machined from stainless steel, which resists corrosion better than plain carbon steel and holds up to repeated field use. The fluting along the length is primarily cosmetic, giving the barrel a more aggressive profile while also shaving a small amount of weight. The rainbow coating is a physical vapor deposition finish that resists wear better than paint, and it won't chip or fade the way a sprayed color would.

What you get and what you need. This ships as the outer barrel alone. It threads at the muzzle end for standard airsoft accessories, so you can mount a flash hider, compensator, or mock suppressor if your field allows it. The barrel is designed specifically for the Hi-Capa 5.1 platform, and it will not fit other pistol frames or inner barrel lengths. Check your current barrel length before ordering—if your inner barrel protrudes past the factory outer barrel, a longer outer tube may be necessary to clear it.

Installation is straightforward: remove the slide assembly, unscrew the existing outer barrel from the frame, and thread this one in. No tools are required beyond what you'd use to field-strip the pistol normally. The barrel is a single piece, so there's no shimming or adjustment needed once it's seated.

Includes only the outer barrel. Mounting hardware, inner barrel, and hop-up components are separate purchases.