For Sale: SIG Sauer MCX Spear LT with PolarStar Kythera HPA Engine
The replica is used, has been fielded in several games, and functions flawlessly.
The base platform is the original SIG Air / VFC MCX Spear LT, fully converted to a PolarStar Kythera SA (V2).
The engine is purely mechanical and requires no battery or electronics.
Equipment / Modifications:
- PolarStar Kythera SA Engine (V2)
- Stainless steel inner barrel
- Modified hop-up unit
- M-LOK handguard
- Surefire-style suppressor
- Modlite weapon light (Modlite)
- NGAL laser/illuminator (high-quality replica)
- T2 red dot optic
- Folding stock and ambidextrous controls
- Internal airline routing