FMA Gas Pedal Thumb Stop for RIS Rail — Black

The FMA Gas Pedal is a thumb stop designed for shooters who run a thumb-over-bore grip rather than wrapping the thumb around the handguard: a technique common among those seeking more direct lateral control and a more natural wrist alignment. It mounts on any standard RIS rail and takes up minimal space at 29x45x36 mm, weighing just 55 g.

The main benefit is reduced fatigue during extended sessions: parking the thumb on a fixed rest offloads tension from the wrist and stabilises the muzzle on the horizontal plane, where recoil impulse tends to push it off. The trade-off to consider is that this thumb position makes accessing the rifle's lateral controls — selector and bolt release — less instinctive for those not already familiar with the technique. Anyone who already shoots this way will find the Gas Pedal a consistent, repeatable reference point every time they mount the rifle.

The high-strength polymer construction keeps weight below that of equivalent metal solutions without introducing any play on the rail: the standard RIS screw attachment locks it in place without adapters. The top surface of the thumb stop is contoured to seat the fingertip comfortably even with tactical gloves, without requiring excessive pressure to hold position.

Key points

• The fixed thumb rest stabilises the rifle on the horizontal plane and reduces wrist fatigue during extended shooting sessions.
• The 55 g weight and compact profile do not alter handguard balance or interfere with a torch or other accessories mounted alongside.
• The contoured surface keeps the thumb in place even with tactical gloves, with no adjustment to grip required.
• Mounting on a standard RIS rail is direct: no adapters, no special tools beyond an Allen key.
• The polymer construction withstands impact without adding metal mass to the front end of the weapon.

In the box

• 1x FMA Gas Pedal thumb stop