Atlas Custom Works Tokyo Marui Hi-Capa No Marking Type 2 GBB 4.3 Aluminum Frame, Black

The Atlas Custom Works No Marking Type 2 is a 4.3-inch aluminum frame built for Tokyo Marui Hi Capa gas blowback pistols. If you're running a competitive build or just want a frame that won't flex under heavy use, this is the upgrade path. Standard polymer Hi Capa frames work fine for casual play, but they can develop play over time, especially if you're running hot gas or high-cycle matches. This CNC 7075 aluminum replacement removes that variable.

What you get. The package includes the frame, a stainless steel sear, valve knocker, and pin set. The stainless steel components handle repeated hammer strikes better than the factory parts, which is the main wear point in a GBB hammer system.

Size and fit. At 185mm length and 140 grams, this is a full-size frame designed for standard Hi Capa slides and internal assemblies. It fits TM-spec Hi Capas and most M1911 GBB platforms that follow the Tokyo Marui footprint. If you're building a match pistol where every millimeter counts, the 4.3-inch designation tells you it's sized for longer slides and full-length guide rods.

No marking means compliance. This frame has no manufacturer markings, which matters in regions with stricter replica firearm regulations. It also gives your build a clean, uncluttered look if that's what you prefer.

Before you buy. Installing a custom frame requires disassembling your entire GBB pistol and pressing pins. If you've never done this before, budget time for a careful teardown or plan to have a technician handle it. The frame itself is precision-machined, but improper installation can cause binding or gas leaks. Also note that changing the frame can alter the pistol's balance and trigger feel, so test-fit your slide and internal components before final assembly.

Includes all pins and hardware needed for installation. Frame only—slide, barrel, and internal assembly are not included.