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The M40 rifle is a bolt-action sniper rifle used by the United States Marine Corps. It has had four variants—the M40, M40A1, M40A3, and M40A5.

The stock of the replica CYMA M40A3 is made from reinforced polymer and feels rigid. It is heavily textured where you grip it for extra control of the rifle. The outer barrel and trigger system are metal.
The CYMA M40A3 is adaptable. It has an adjustable cheek rest. The length of the replica may also be adjusted via the spacers on the butt of the stock.
On the stock of the rifle there are sling attachment points for push-button QD slings.
Additionally, the stock has Harris bipod adapter.
The Cyma M40A3 may be internally upgraded with AEG barrels (bridged) and AEG buckings. This Cyma model is the OEM of the S&T M40A3 PDI Custom, LOL.
Out of the box this replica will perform at roughly 480 FPS.