Description
The Saber Tactical FX Impact Magnetic Arm Lock keeps the FX Impact’s side cocking arm in the open position, which is useful in competitions that require the bolt to remain open, and when clearing or storing the gun. It is machined from 6061 T6 aluminium with a black anodised finish, uses a stainless-steel screw and weighs about 1 oz. Saber Tactical recommends removing the bottle and firing the gun to empty the plenum before installation, then unscrewing the bolt in front of the plenum and fitting the lock.
Key features
- Holds the cocking arm open
- Useful for open-bolt competition rules and safe handling
- 6061 T6 aluminium, black anodised; stainless-steel screw
- Weighs about 1 oz
- Simple installation (degas the plenum first)
- Saber Tactical part ST0048; made in the USA
Frequently asked questions
How is it installed?
Saber Tactical: remove the bottle, fire the gun to empty the plenum, unscrew the bolt in front of the plenum and fit the Magnetic Arm Lock.
Which Impacts does it fit?
Saber Tactical lists it for the FX Impact; confirm fitment for the M4 with us before ordering.
Does it affect cocking?
It holds the arm open magnetically; cocking releases it as normal.
Specifications from Saber Tactical Inc (sabertacticalinc.com). Australian importer: SJS Trading Co.
Airgun accessory, sold and supported by 3 Gun Tactical, Licensed Firearms Dealer 50001578, Tingalpa QLD. Designed for use on airguns only — check the fitment notes against your exact FX model and generation before ordering.







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