
- description
The 4.3 is the Hi-Capa people pick when they want something that handles quickly rather than something that wins on sight radius. This slide leans into that. Only the rear portion travels, 35.9g of it, and the complete kit comes to 130.7g — both figures below the 5.1 equivalent.
What you get from that is a cycle that finishes sooner and a gun that stays flatter between shots. The TDC wheel sits externally on the slide body, so hop tension is a fingertip job with the gun assembled, and the barrel carries its own optic plate with a riser supplied.
A removable CNC charging handle comes in the box and mounts on either side, which is worth more than it sounds on a gun this short.
Specifications
| Specification | Detail |
|---|---|
| Base platform | Tokyo Marui Hi-Capa 4.3 |
| Material | High-precision CNC-machined 6061-T6 aluminium |
| Reciprocating slide weight | 35.9g |
| Total kit weight | 130.7g |
| Muzzle thread | 11mm CW, with an 11mm CW to 14mm CCW adapter included |
| Optic support | Integrated barrel optic plate plus riser block |
| Slide stop | Supported |
| Charging handle | Detachable ambidextrous CNC handle, mounts left or right |
Good to know before you buy
This is the 4.3 part. The 5.1 is a different length and takes its own version — the two do not cross over.
The fixed outer barrel and non-tilting block arrangement is what kills inner barrel movement during a fast string, and it is also why the optic stays steady. Both benefits come from the same design decision.
A faster cycle asks more of the nozzle return spring. If you find the gun skipping rounds when you shoot quickly, a stiffer rate is the usual remedy.
Muzzle threading is 11mm CW with an adapter supplied, so check what your existing suppressor or tracer expects before you order extras.
Frequently asked questions
Why is the 4.3 version lighter than the 5.1?
There is simply less slide. The moving portion is 35.9g against 38.6g, and the full kit 130.7g against 136.8g. On a short gun that difference is felt more than measured.
Does the charging handle have to be fitted?
No, it is detachable. It mounts on the left or the right, or comes off entirely if you prefer a clean profile.
Can I move my existing 14mm CCW muzzle device across?
Yes, using the supplied adapter. The barrel itself is 11mm CW.
Will this fit a clone 4.3?
It is machined for the Tokyo Marui 4.3. Clones differ in frame and rail dimensions by brand, so send us a note about yours and we will tell you what we actually know rather than what is likely.