CNC Aluminium handguard
6.03mm Tightbore inner barrel
Licenced by GrandPower Firearms
If you're looking for an affordable MK18 MOD.1 platform for a build project or Milsim loadout, the Delta Armory DA-GP-B15 BRAVO™ MK18 MOD.1 M4/AR-15 AEG is one to watch. This variant of Delta's MK18 is a little different than the previous version, now equipped with a standard Milspec receiver shape and Crane stock with licenced trademarks from GrandPower Firearms. 
Inside, the DA-GP-B15 is equipped with the same internals as other BRAVO™ platforms, including an SHS tappet plate, SHS piston with a full steel tooth rack, 7mm ball bearing bushings and a reinforced gearbox shell with a quick change spring guide. Also inside is a 6.03mm tightbore inner barrel paired with a rotary HOP-up unit, getting you off the mark with above-average accuracy potential and a slight FPS boost. 
Externally, the DA-GP-B15 build style follows the standard BRAVO format, with a CNC aluminium handguard, alloy outer barrel with a high density polymer receiver and buffer tube. This means it tips the scales at far less than a full metal MK18 but still has realistic weight distribution; perfect for those who want to mount the kitchen sink to their primary without compromising in-game agility. If you like the Milspec MK18 aesthetic but prefer to fight easy, the Delta Armory DA-GP-B15 BRAVO™ MK18 MOD.1 M4/AR-15 AEG should suit you perfectly!