An MLOK handguard affords you the ability to mount any compatible accessories to the front of your X9 in virtually any configuration you can think of

Hi-visibility real fiber optic inserts (brighter than standard acrylic rods)

Prometheus High Cycle Hard Piston

the LayLax Nitro Vo

but your budget is limited

E&L Airsoft 5 pack 74N Mid-Cap 120Rds AEG Magazine Box Set - Bakelite NCStar An MLOK handguard affords youConstructed with a dense, durable polymer frame that withstands rigorous use Compatible with E&L and most standard AK Series AEGs Includes five pieces to provide extra magazines in your loadout No winding or pull string required for quick operation once loaded Spring guide feeding eliminates rattle when maneuvering throughout the field Contains 5 magazines