The Echo 1 combat sight set easily flips down when you want to utilize an optic for better target acquisition

Machined metal alloy construction

but now has an intuitive easy to access programming switch built into the gearbox that allows quick changing of pre-programmed fire modes

The PXG9 just made it affordable for everyone

when installed

AW Custom Drum Magazine for Gas Blowback Airsoft Pistols & Rifles - for SAI BLU / Elite Force GLOCK (Black/Red) F2000 The Echo 1 combat sightFeatures Injection molded polymer body is lightweight but can withstand the rigors of field use Easy to use winding mechanism ensures proper feeding 400 round capacity Metal magazine stem Easy to fill design Provides more firepower than standard extended magazines Huge gas reservoir Specifications: Material: Polymer, Aluminum AlloyCapacity: 400 roundsGas Type: Green GasCompatibility: Elite Force, UMAREX GLOCK and other GBB Pistols w VFC Blowback