First Factory Rail Stock Base Umarex 270mm Outer Barrel With 55mm

270mm Outer Barrel With 55mm Flash Hider

This16inch Version come with 330mm RIS Free Float Handguard (With Built-in Front Flip-up Sight)

Fit to mount on 20mm Picatinny Rail With Quick Detach System

)/1 Scale High Power Assembled Airsoft Electric Gun AEG Rifle

Design For Open KAC RAS Barrel Nut & R-15 Barrel Nut

First Factory Rail Stock Base Umarex 270mm Outer Barrel With 55mmThe First Factory Rail Stock Base is designed to be compatible with the First Factory (Laylax) Picatinny rear stock base series, as well as airsoft models equipped with a Picatinny rail on the stock base. Notable examples include the SIG Sauer Proforce MCX and MPX electric airsoft guns manufactured by VFC (licensed by SIG AIR). This versatile accessory allows for customization by combining it with various airsoft M4 AR 15 compatible retractable