Umbrella Armory


UA_HK416A5 2022

Build details
UA_HK416A5 build details



Air nozzle VFC M4 type air nozzle with o-ring
Anti-reversal latch Lonex anti-reversal latch, spring
Barrel Lapped 310 millimeter 6.01 tight bore stainless steel inner barrel with R-Hop patch
Bearing Umbrella Armory 8 millimeter steel caged bearing set
Bucking Madbull blue soft 60 degree bucking, flat hop modified
Cylinder Stainless steel 3/4 ported cylinder
Cylinder head CNC double o-ring cylinder head
Electrical GATE Titan advanced V2 (rear-wired), pre-programmed
Gears 18:1 SHS sector/spur, SHS 10 tooth bevel
Gearbox shell Retro Arms V2 gearbox shell
Hop-up UA x Maxx Model, Pro, hop-up chamber
Motor Warhead Industries high speed brushless motor
Piston Angel Custom "Kratos" Steel tooth Piston
Piston head Lonex polyoxymethylene piston head, washer AOE
Spring ASG steel AEG M125 spring
Tappet plate Guarder tappet plate
Tappet spring G&G tappet spring
Trigger Maxx Model adjustable trigger, titan type b, pre-tuned



 Motor grip PTS EPG-C motor grip


Battery Matrix 11.1 volt 1450 mah 20c lithium polymer battery, stick type
Magazine PTS EPM 150 round M4 type mid-cap magazine 
Sights Flip up sights
Misc GATE USB link, unjamming rod, patch

Choose a Color
Choose a Mission
~5 week build time
Upgraded VFC & Elite Force HK416a5 AEG, equipped with individually tested parts and modifications suited for high performance competitive use.
This rifle is equipped with our MILSIM mission to last under heavy extended field use with increased efficiency and durability in mind.
2022 Updates: Warhead Brushless Motor (High speed), Angel Custom "Kratos" piston, PTS EPG-C, 'Lapped' 6.01mm inner barrel, UA R-hop 3.0. 
400_FPS (.2g) 32_RPS (12.6v) 34_MS (12.6v) 225_FT (.32g)

 Table information


  • Total length: 28.3 - 31.5 inch
  • Unloaded weight: 6.2 pound
  • Barrel length: 12.5 inch
  • Thread: -14 millimeter 
  • Handguard: 10 inch
  • Battery: stick type, Deans, 3-cell
  • Licensed Heckler & Koch
  • Hair trigger
  • Brushless motor
  • Lapped R-hop inner barrel
  • Programmable ETU / MOSFET
  • 1 year extendable warranty


  • Aluminum alloy receiver, handguard, outer barrel, buffer tube
  • Polymer motor grip, adjustable stock


  • Must be 18 years of age to purchase
  • 3 week build time
  • Airsoft gun includes orange tip (not pictured)
  • Please view build details for items included as items pictured may not be included
  • Unable to ship outside USA
  • Return policy

Recommended BB Weights

We prefer these weights for these muzzle velocities. For two main reasons. Best performance, and reliability. These BB weights will give the optimal range, and feed reliably. Going heavier than what is recommended may cause issues or PME if the magazine is not modified.

450-500FPS = 0.36g-0.40g
400-450FPS = 0.28g-0.36g
330-350FPS = 0.23g-0.25g