FMA AN/PEQ-16 Battery Compartment — Black

The FMA AN/PEQ-16 replica battery compartment is a modular stick battery housing designed to mount on a MIL-STD-1913 Picatinny rail, built for shooters who need a compact, functional auxiliary battery storage directly on the rifle. The internal cavity measures 90x45x20 mm, with a removable centre section that allows the housing to accommodate batteries of different lengths without replacing the entire unit.

The body profile follows the geometry of the original AN/PEQ-16, with the central surface recessing downward into the rail rather than projecting upward: this lowers the accessory's centre of gravity relative to the barrel and brings the housing closer to the top of the weapon. The practical result is a slimmer overall silhouette on the rifle and less interference with already-mounted accessories, particularly low-profile optics.

The removable section is the core design feature and, at the same time, its main trade-off: it allows the housing to be reconfigured in seconds, but requires the extracted section to be stored separately when not in use. Shooters who rarely need to change battery format may find a fixed-size housing more practical, as it offers a more solid joint at the centre.

Key points

• The removable centre section allows the compartment to be used with batteries of different lengths without swapping the main body.
• The concave base profile reduces vertical bulk on the weapon, limiting interference with optics and accessories mounted above.
• The MIL-STD-1913 interface ensures compatibility with the vast majority of tactical rails on rifles and carbines.
• The 90x45x20 mm internal cavity fits standard stick batteries that are widely available.
• The polymer body keeps weight low without adding unnecessary mass to the overall setup.

In the box

• FMA AN/PEQ-16 battery compartment, black
• Removable centre section