Feature：

➤ Made from CNC machined aluminium with black anodized finish.
➤ M-LOK interface rail system for any M-LOK spec accessories like bipod or grip.
➤ Patented "Front Charging" feature, can be reversed to cater right or left-handed shooter.
➤ Multiple lengths：9.5".
➤ Compatible with VFC/GHK/WE stock gbb bolt assembly and upper receiver.
➤ Not compatible with HK416 series
➤ For WE-tech M4 GBB series, the positioning lugs of handguard need to be filed out a little bit, and cut down the rod of dust cover to fit the handguard.

➤ Made from CNC machined aluminium with black anodized finish.
➤ M-LOK interface rail system for any M-LOK spec accessories like bipod or grip.
➤ Patented "Front Charging" feature, can be reversed to cater right or left-handed shooter.
➤ Multiple lengths：5.5".
➤ Compatible with VFC/GHK/WE stock gbb bolt assembly and upper receiver.
➤ Not compatible with HK416 series
➤ For WE-tech M4 GBB series, the positioning lugs of handguard need to be filed out a little bit, and cut down the rod of dust cover to fit the handguard.

➤ Made from CNC machined aluminium with black anodized finish.
➤ M-LOK interface rail system for any M-LOK spec accessories like bipod or grip.
➤ Patented "Front Charging" feature, can be reversed to cater right or left-handed shooter.
➤ Multiple lengths：4".
➤ Compatible with VFC/GHK/WE stock gbb bolt assembly and upper receiver.
➤ Not compatible with HK416 series
➤ The 4" length version works ONLY for "Hummingbird" Airsoft AR15/M4 GBB Short-stroke Bolt Assembly. Not for stock GBB bolt.
➤ For WE-tech M4 GBB series, the positioning lugs of handguard need to be filed out a little bit, and cut down the rod of dust cover to fit the handguard.