Contact Us Tel:(626) 286-0360 Store Locations
NEW Phone Support Hours M-F 7am-6pm PST
Browse by Type or Category
Summer is finally here! Get out and Airsoft! Save 20% with coupon code: SUMMER2019 (Sale/MAP items exempt, click for details)

Modify Accurate Hopup Chamber for M4/M16 Series Airsoft AEGs

ID: 37457 (HU-HP-02-01)
MOD HU M4 (HP-02-01)
ModifyMOD HU M4 (HP-02-01)37457
4.6 stars, based on 8 reviews
Modify Accurate Hopup Chamber for M4/M16 Series Airsoft AEGs
Hover or touch above to zoom
Product image 1


MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
  • One Piece Precision Hop-Up Unit
  • Built for Speed and Accuracy
  • Designed for highly precise hopup tuning
  • Redesigned pressure plate by adding an adjustment gear allowing for easier, more accurate adjustment
  • Includes Chamber Parts (Bucking not Included)

  • Compatibility: Standard TM Compatible and other similar M4/M16 Series Airsoft AEG Rifles

    Manufacturer: Modify

    8 Customer Reviews

    (Write a review)

    by Hunter D. on 12/28/2017
    "Works great, its very very touchy though. (Barely move it to adjust alot) I recommend this to anyone who is trying to lift bb weight .28's and higher only. Works best with those weights from what I tested.
    by Jake B. on 09/15/2017
    "this is a very good hop up unit. it solves all of the problems of a traditional hop up so if your gun cant fit prowins or other aftermarket units this is perfect. for the price its great and i recommend it to anyone who is looking for a budget hopup unit.
    by alex d. on 07/28/2015
    "I just recieved this today and very amazing hop up. I was able to put it together in under 9 mins. And i was reading other reviews and i read that it will not fit into g&g guns without modification to the wings but i was able to slide it in without a problem. I have a g&g cm16 raider.

    Questions, Answers and Comments

    Discuss about Modify Accurate Hopup Chamber for M4/M16 Series Airsoft AEGs with your friends and fellow shoppers!

    Comment or answer questions for a chance to win awesome prizes. Details can be found on the Facebook page. Remember to check "Also post on Facebook" when commenting to qualify for the giveaways!

    Have an urgent question about this item? We monitor these comments daily, but it may be faster to email us directly or call us at (626) 286-0360. Our resident experts are standing by to answer your questions!

    California Proposition 65 Warning: Cancer and Reproductive Harm -