Tokyo Marui M4A1 MWS, M4A1 MWS CQBR, M4A1 Carbine(GBBR)
About Guns Modify:
Guns Modify is a Hong Kong based company dedicated to making high quality and innovative upgrade parts for both airsoft pistols and rifles. Everything from springs to frames, Guns Modify ensures products delivered to customers are thoroughly tested and designed with care. Their slogan is: Guns Modify Never Stop Innovation!