Atlas Custom Works
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The MDX is for players who need a compact M4 without the wobble of a cheap CQB stock. It uses a retractable design that collapses the length of pull while keeping the buffer tube, so you get a smaller profile without losing the ability to run a standard stock later.
Material and fit. The body is CNC aluminum with steel hardware, which is heavier duty than the polymer stocks that come on most M4s. It's built for Tokyo Marui-spec AR/M4 AEG platforms, so it's a direct drop-in if your rifle follows that standard.
What to expect. This is a full-metal build, so it adds weight compared to a polymer stock. If you're chasing the lightest possible loadout, a carbon-fiber or reinforced polymer option might suit better. The MDX trades some weight for rigidity and durability in hard-use scenarios.
Before you buy. This is the stock only. You'll need your own buffer spring and any mounting hardware. Check that your existing buffer tube and spring are compatible before ordering.