Hinged dust cover with 20mm M1913 Picatinny rail for optic

Cold weather resistant

and precision while creating the perfect air seal with excellent resistance to oil and wear

We always recommend having a back-up battery pack on hand so that the fun stops when YOU decide

and while they are intended for M4 magazines

Pro-Arms Steel Fiber Optic Sight Set for Elite Force / UMAREX GLOCK ISSC M22, SAI BLU, Lonewolf, & Compatible Airsoft Gas Blowback Pistols Shotgun Hinged dust cover with 20mmFeatures Front and rear sight system Durable steel construction Orange and green fiber optics included Easy to install Ideal for rapid target acquisition for all types of lighting conditions Manufacturer: Pro Arms Specifications: Material: Steel, Fiber opticCompatibility: Elite Force, UMAREX GLOCK and other GBB Pistols w VFC Blowback System SAI BLU, ISSC M22, Lonewolf, ZEV, G&P Custom, P80 and other GBB Pistols w WE Tech Gas Blowback System