AEG Parts - Internal

Prometheus Perfect Metal Chamber NEO (M4 Hopup Chamber, with Pressure Arm and Gear).  This is a replacement hop up chamber for all M4 type AEG airsoft guns.  It's a very...

UNICORN Nitroflon Coating 6.03MM Ultimate Precision Inner Barrel For AEG with Hop-Up & Hop Up Knob/Nub and AEG Fixed copper ring. outer: 8.55MMinner: 6.03MMmaterial: Brass electroplating nitroflon coatingincluded: UNICORN AEG 60 degree Hop...

Action Army Hop Up Rubber Bucking AEG.  A 60 degree bucking for use in AEGs.  Good for all gun replacements!

JG AEG Hop-Up M4 Metal Unit Set. Made by Cyma (JG OEM) for use in all airsoft M4 guns and other AEGs. Great replacement for your factory unit.  Metal construction...

Mad Bull Shark Hop Up Buckings. Package includes one black and one clear. If you're not sure which hop up unit to get, these are quite popular and recommended.

The Maxx Model Hop Up Chamber R Nub - 4.5mm.  Replacement 6mm nub for your airsoft hop up chamber by Maxx.  Works in the Maxx chambers only.

The Maxx Model Hop Up Chamber R Nub - 6mm.  Replacement 6mm nub for your airsoft hop up chamber by Maxx.  Works in the Maxx chambers only.

A-Plus Hop Up Rubber for Marui/KJW Pistols

Mad Bull Shark Hop Up Bucking [Red]

The Modify Baton Ryusoku Flat Hop Up Rubber Nub.  This is just the little rubber nub, flat, that works with your bucking.   If you're looking for a flat hop you...

Maxx Model M4A Pro Hop Up Chamber - M4 AEG - new 2022 model for general airsoft M4 AEG models. CNC Aluminum Hopup Chamber M4A Pro (with BB Latching System)...

The G&G Rotary Hop Up M4 Chamber is a rotary style for M4 and M16 style airsoft guns.  New for 2017, this is a great hop up chamber for those that...