The LVOA-C and LVOA-S handguard (rail system) features threaded screw holes along the sides to directly mount Picatinny accessory rail sections. The screws used are the same specification used as the real LVOA handguard. They are not the same as the screws used with Keymod or M-LOK accessory rail sections.
The screws used with the original Picatinny rail section included with the AEG has the following specifications:
- Type: Flat-Head Socket Cap
- Threading: #8-32
- Overall length: 3/8"
- Allen key size: 3/32"