Modify Double H-Nub (2 hardness in one package)

How to buy the right Gunpla and build your first model - Polygon

SILVERBACK AEG FLAT HOP-UP BUCKING 80° 4PCS

UPGRADE PARTS

Modify Double H-Hop Nub Set for Airsoft Sniper Rifles and GBB Airsoft Pistols, Accessories & Parts, AEG Internal Parts, Hop-Up, Hop-Up Parts - Airsoft Superstore

Modify Metal Hop Up Chamber

UPGRADE PARTS

Modify Airsoft Double Hop-Up H-Nub 2 Pack VSR MK23 Hi-Cappa Mod24 GBB 66209316

Element H-Nub Hop-Up Unit x 2（Black x 1 White x 1） For AEG Hop Up Units - AliExpress

Hop-Up Bucking