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Home » Accessories & Parts » AEG Internal Parts » Hop-Up » Machine Gun Hop-Up

Bullgear CNC Machined Hop-Up for Airsoft AEG Machine Gun
(Model: A&K / Cybergun / Classic Army M249)

ID: 71548 (HU-BGRINU-HU-1-0001)
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BullGear

$69.95

This item is currently Sold Out

Model Options:
ModelA&K / Cybergun / Classic Army M249$69.95
ModelA&K, LCT and Raptor PKM / M60$65.00
ModelClassic Army Stoner LMG$65.00
ModelCybergun FN Licensed M249 "Featherweight"$75.00
ModelG&P Stoner MK63$75.00
ModelLambda Defense Mk48$75.00

Description

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Product Description

Features

  • CNC machined aluminum alloy construction
  • Precision craftsmanship increases accuracy and range
  • Easy to manipulate rotary hop-up
  • Designed for use with Prometheus purple bucking, or other lipless buckings
This isn't just a replacement CNC hop up for A&K, Cybergun and Classic Army M249. Made out of full metal so it will last longer and give you the edge in accuracy. It is designed for the Prometheus Purple hop up rubber, or other lipless hop up rubbers. Once the barrel is connected to the chamber itself, there is absolutely no wobble at all which increases it's reliability. Modern hop up chambers uses a spinning dial to adjust the hop which is far more reliable than previous versions and will account for more precise adjustments.

Manufacturer: Bullgear

9 Customer Reviews

(Write a review)

by Hunter K. on 02/23/2024
"This is the only Hop-Up you should every be running in an A&K or Classic Army M249. If you have one of the M249's this is made for, buy this up while it's still in stock. This hop-up unit completely eliminates all the issues with the stock units. It feeds flawlessly and when installed correctly with quality parts (bucking, Barrel, ect.) allows for extremely consistence shots.
by Josh T. on 01/11/2024
"Works a treat and nicely fixes the weird feeding the stock hop is prone to on an A&K M249.

I got a Gen3, which uses four screws to hold everything in place.

Bullgear recommends a purple Prometheus bucking - do what they tell you. I tried doing some thinking (Mistake #1) and using a Red, since my gun is running ~390fps. Big mistake - doesn't work.

Put in a purple? Needs less than half the adjustment range to hop 0.28's.

Great hop unit - just make sure to listen to Bullgear and use the right bucking!
by nicholas m. on 03/08/2020
"i have the gen 2 version of this (has two screws to pull the barrel clip up, and a screw for the hop up arm not a lever) and i have been very pleased. Truly a drop in mod to correct the hop up issue from A&K. I did have to run a slightly longer nozzle to achieve full compression but not a huge issue, for me 21.6mm was the correct nozzle length and i put a slight chamfer on the end of mine. checking against my chrono (acetech5000) im getting deviations of about /- 2fps @23 rps which is great for me. This is in a MK2 with a 510mm barrel.

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BullGear

About BullGear

BullGear designs and manufactures custom parts for Airsoft guns.