Leapers have a laser mount front sight for the M4 out. I can’t tell if it’s intended for real rifles or Airsoft however given it uses a generic mount it should fit any weaver style rail:
Model 4/15 Removeable Front Sight and Red Laser Combo
(MNT-LS750)
- TS Platform and SSS Structure for Most Durable and Responsive Internal Adjustments
- Clear and Extra Bright Laser Beam
- Precise and Wide Range Windage and Elevation Adjustments
- Aim and Instant Lock on Targets to Enhance Shooting Accuracy and Performance
- Height Adjustable Front Sight
- Integral Picatinny/Weaver Style Mounting Deck
- Ambidextrous Push Button Switch and Remote Pressure Switch
- Hard Anodized Finish for Wear Resistance
- Four AG-13 (LR44) Alkaline Button Cell Batteries (Leapers)
