Lighweight rail system that at SKDTac that you can use for M4 PTWs or Gas Blowbacks… "The VTAC Extreme BattleRail is an one-piece, free floating rail for AR15 systems. The unique lightweight design helps reduce heat transfer and allows for a faster target acquisition. The rail is easy to install and features an uninterrupted top M1913 rail that allows the mounting of optics and backup iron sights. TROY designed a barrel nut specifically for the TRX rail meeting a tighter tolerance which will reduce stripping the barrel nuts altogether.
- New state of the art rotary locking system
- Proprietary patent pending one-piece design
- Free floating design
- Continuous, uninterrupted top rail
- Installs in less than two minutes
- Reduced heat transfer
- Significant weight reduction
- True U.S. Military Specification M1913 rails
- Increases target acquisition speed
- Free floating design that enhances accuracy
- Comes with one 4in and two 2in quick attach rails
- Weight: .7 lbs."