Atlas Custom Works Tokyo Marui Hi-Capa 3.9 Type 2 Infinity CNC Aluminum Frame, Silver

The Atlas Custom Works 3.9 Type 2 Infinity frame is a direct replacement for your Tokyo Marui Hi-Capa's factory frame. At 160mm overall length, it's the compact variant in ACW's lineup — shorter than full-size Hi-Capa frames, which matters for draw speed and holster compatibility. The frame is CNC-machined from aluminum, so it's lighter than steel alternatives and won't wear down the same way polymer does after thousands of dry fires.

What's included. The package comes with the frame itself, a stainless steel sear, valve knocker, and pin set. You're not just getting the shell; you're getting the small internals that actually make the gun cycle. Installation requires a full field strip and press-fit of the pins — if you've never done a Hi-Capa build before, budget time for a first-timer's learning curve or take it to a tech.

The SV profile. This is the "SV style" variant, which refers to the slide cut and grip angle. It's designed to mimic the Infinity series aesthetic that competitive 2011-style pistols use. If you're building for IDPA/USPSA division compliance or just want that competition look, the SV profile matches that visual language.

What to know before you buy. This is a frame-only upgrade. You'll need to source your own slide, barrel, hop-up unit, and blowback unit unless you're harvesting from a donor gun. The frame is compatible with the full Tokyo Marui Hi-Capa series, but ACW also makes their own BBU and slide sets if you want a complete build path. Silver finish shows wear faster than darker anodized options — expect to see contact points on the grip and slide rails after heavy use.