Specna Arms - SA-F03 Flex M4 sd6 This package comes with a

This package comes with a KSC Model 18C gas blow back gun included and already installed

Length    220mm

A 4x magnification ACOG sight with fibre illumination

which is mechanically and physically very solid

the Tar 21 replaced the legendary M4/M16

Specna Arms - SA-F03 Flex M4 sd6 This package comes with aSA FLEX SA F03 Carbine Replica Specna Arms proudly presents the FLEX line of replicas. An affordable price combined with an innovative quick spring change system, great performance straight out of the box and high quality components makes this series an excellent choice for both beginners and experienced airsoft players alike. The receiver, the stock tube with the enlarged SF type stock housing the battery, as well as the front in the M LOK standard