ASG 70° Hop Up Rubber & Nub

£7.95

Firm 70 Shore hardness suited to higher-power AEG builds
Improves air seal for more consistent muzzle velocity
Applies clean backspin for better range and accuracy
Set includes both the hop-up rubber and the nub
Fits standard AEG hop-up chambers and inner barrels
Simple, low-cost upgrade for tighter groupings

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Description
Specification

Tighter seal, straighter shots

The hop-up bucking is the single part that most affects how your AEG shoots. This ASG 70 degree rubber seals the gap between the nozzle and inner barrel, so more air gets behind the BB for consistent muzzle velocity and cleaner backspin.

Built for higher power

At 70 Shore, this is a firm compound. That firmness resists deforming under the higher air pressure of hotter AEG setups, holding a stable hop for repeatable range and accuracy shot after shot.

Rubber and nub together

The set includes both the hop-up rubber and its nub, so you have everything needed to shape the hop contact patch in one package. It drops into standard AEG hop-up chambers.

An easy win

A fresh, quality bucking is one of the cheapest ways to sharpen an AEG’s performance. If you would rather leave the internals to us, our airsoft repair service in Kent can fit and tune it for you.

Product information reviewed by James Smith. Every gun is checked & serviced by our Rochester workshop before dispatch.

General
Brand	ASG
Other
Product type	AEG hop-up bucking and nub set
Hardness	70 Shore A
Compatibility	Standard AEG hop-up chambers and inner barrels
Material	Rubber
Includes	Hop-up rubber and nub
Calibre	6mm
Best for	Higher-power AEG setups
Purpose	Air seal and BB backspin

Recommended upgrades & accessories

Frequently asked questions

What does a 70 degree bucking do?

It seals the nozzle-to-barrel gap and applies backspin (hop) to the BB, improving range and accuracy. The firm 70 Shore compound suits higher-power setups.

Will it fit my AEG?

Yes, it is designed for standard AEG hop-up chambers and inner barrels.

Is the nub included?

Yes, this set includes both the hop-up rubber and the matching nub.

When should I choose 70 degree over softer buckings?

Harder 70 degree buckings suit higher fps AEGs. Softer 50 to 60 degree buckings are often better for lower-power builds.

Do I need a UKARA or to be 18 to buy this?

No, this is an internal upgrade part with no age restriction and no UKARA requirement.

ASG 70° Hop Up Rubber & Nub