GR-1 "Anvil"

The Arcflash Labs GR-1 "Anvil" is a portable shoulder-fired semi-automatic bullpup 8-stage coilgun designed and manufactured by Arcflash Labs in Los Angeles, California.^[1][2] It is the most powerful handheld coilgun ever sold publicly. It was developed 3 years after the EMG-01A.^[3]

Arcflash Labs GR-1 "Anvil"
Type	Bullpup coilgun
Place of origin	United States
Production history
Designer	Arcflash Labs
Manufacturer	Arcflash Labs
Unit cost	$4,000.00 USD
Produced	2021–2023
Specifications
Mass	20 pounds (9.1 kg)
Length	38 inches (97 cm)
Barrel length	26 inches (66 cm)
Width	3 inches (7.6 cm)
Height	8 inches (20 cm)
Caliber	10 to 12 mm (0.39 to 0.47 in) projectiles
Rate of fire	Up to 100 rounds/min
Muzzle velocity	Up to 75 m/s
Feed system	Ten-round magazine

Operating mechanism

The GR-1 uses a clamped quasi-resonant (CQR) step-up inverter described in U.S. Patent 10,811,995,^[1] which allows a six-cell 25.2 volt lithium-ion polymer battery to supply up to 1000 watts of power to eight high-voltage electrolytic capacitors in approximately three seconds.^[2] As with most coilguns, the eight aforementioned capacitors are used to power eight respective electromagnetic coils in the configuration of a linear motor to accelerate a ferromagnetic or conducting projectile to high velocity.

Although the "GR" designation purports the device to be a "Gauss Rifle", as evidenced both by the company^[1] and media reports,^[2][3] this is technically a misnomer on two counts—it is neither a rifle (as it doesn't use rifling) nor a Gauss gun (a type of accelerator that uses permanent magnets and is distinct from a coilgun).

Legality

Under United States law, "firearms" are defined as propelling a projectile by combustion. Coilguns such as the GR-1 do not have any combustion mechanism, and therefore are not legally considered firearms. However, Arcflash Labs legally refers to the GR-1 as an air gun out of an abundance of caution.^[2]