Nifty XM177 Gas Blowback rifle under the Viper Tech brand which gets its same pedigree from Inokatsu, which also means a pricey pedigree as it's available at eHobby Asia for US$650.00 and you can use WA M4 GBB magazines with it too... "Extremely robust VIPER AR-15 Series Gas Blow Back - 2010 VERSION! Viper is OEM factory of Inokatsu M4 GBBR to provide same level supreme craftsmanship & Top Notch finishing. As solid & robust gun as a real steel.
- High Quality CNC Machined Forged Aluminum Receiver
- Real M16A1 Type Body (without marking)
- M16A2 Type Carry Handle
- 9.5inch XM177 One-Piece Outer Barrel
- XM177E2 Type Steel Flash Hider
- Functional STEEL Bolt Carrier
- Full Size Solid Fixed Stock
- Includes 50 Rounds Gas Operated Metal Magazine (We recommend to use with ProWin / WA / G&P Gas Operated Magazine 'SOLD SEPARATELY' to operate the best performance of this lovely baby)
- You can even take RED GAS on it to enjoy the True Recoil (VIPER TECH suggested no more than 12kg power gas)
- Real Measurement 14mm Clockwise barrel extension tube
- Sling mount can be installed with single, 2- or 3- point tactical sling"