4UANTUM Hop-Up Bucking Friction Pro – GBB Bucking & Nub

Name: 4UANTUM Hop-Up Bucking Friction Pro - GBB Bucking & Nub
SKU: 833743Z
Price: 9.99 GBP
Availability: InStock

£9.99

In stock

Available Payment Methods

Description

The 4UANTUM Friction Pro is a high-performance hop-up bucking and nub set designed for gas-blowback pistols (GBB), VSR platforms and compatible GBBRs. Unlike broad-contact buckings that introduce variability, the Friction Pro uses a single-point contact patch with a carefully contoured profile to produce a perfectly centered axis of spin — fewer flyers, flatter trajectories, and more consistent groupings shot after shot. It’s factory-tested to lift heavier BBs (up to 0.48 g) while keeping contact area minimal to reduce drag and inconsistency.

Made from durable rubber at around 60D hardness, the Friction Pro balances grip and longevity for both DMR and close-range setups. Each kit includes an OMEGA-style flat hop nub and a bucking with pre-formed grooves (“fang”) so you can trim it to fit chambers that require modification. It’s built to work with TM-spec inner barrels and is reported compatible with many modern GBB platforms (TM MWS, Walther/TM clones, WE open bolt systems, CYMA CGS, etc.), though some installations may require minor trimming.

Upgrade your hop-up for precise backspin, cleaner groups, and better heavy-BB performance without complex mods.

Key features (bullet list — quick scan)

Single-point contact patch for centered, consistent spin.
Lifts up to 0.48 g BBs — ideal for heavier BB DMR builds.
Includes OMEGA / flat hop nub (soft spare included).
~60D hardness — balance of durability and grip.
Pre-cut grooves / “fang” for easy trimming to fit non-standard chambers.
Compatible with most TM-spec inner barrels & GBB hop units — works across pistols, VSR, and GBBR platforms (verify fit for your model).

Technical specs

Type: Hop-up bucking + nub set (GBB / VSR)
Material hardness: ~60D
Max recommended BB weight: up to 0.48 g (depending on setup)
Included: 1 × Friction Pro bucking, 1 × OMEGA/flat nub (soft spare in box on most SKUs)
Fitment notes: Designed for Tokyo Marui spec inner barrels and chambers; trimming may be required for some GBBR chambers.

Who it’s for

DMR builds wanting reliable heavy-BB performance.
GBB users chasing tighter groups and repeatable hop behavior.
Players who want a low-contact, high-consistency hop solution without switching to a full R-hop.

Shipping & Returns

Shipping
All orders are shipped with one of our hand-picked carriers to ensure a smooth and pain-free delivery experience.

Orders are picked and fulfilled during our standard trading hours. We endevour to ship all orders within 24 hours of payment, and within our opening hours.

We currently only ship to UK Mainland. Please contact us for a bespoke quote if you would like items shipping outside of these areas. Please note: RIFs will only ever be shipped to Mainland UK

If ordering a RIF, please ensure your shipping address matches your registered UKARA address to avoid delays.

If you have any further queries please contact us before placing your order.

Returns

Change of Mind

We operate a 14 day change of mind policy, beginning on the day you receive your goods.
Any items that you wish to return to us must be in their original, unopened and undamaged packing, along with the receipt.
The cost of return shipping is to be covered by the buyer in this instance.
The items must be packaged sufficiently to avoid damage in transit. Any damage caused by insuffucient packaging during return will be deducted from your return value.
Shipping and handling fees are not subject to refund in the event of unwanted or incorrectly ordered goods.

Faulty Items

Warranty period will vary from product to product.
In the first instance, please contact info@hc2airsoft.co.uk with your faulty item query.
If a return is required/authorised, you will be emailed a return label.
The items must be packaged sufficiently to avoid damage in transit. Any damage caused by insuffucient packaging during return will be deducted from your return value.
If your item is determined to be faulty within the warranty period, a repair or exchange will be offered in all circumstances.
If your item is determined to not be faulty, you may be invoiced for all shipping costs related to your return and subsequent re-delivery of the item.

Warranty

All goods supplied by HC2 Airsoft are warranted free from defects for 6 months (90 days for RIFs) from the date of supply (unless otherwise stated). This warranty does not affect your statutory rights as a consumer.
Warranty does not apply to any defects arising from wear and tear, malicious or neglegent damage, mis-use or repair outside of stated guidleines.
Damages on delivery should be notified immediately to HC2 Retail by email at info@hc2airsoft.co.uk. Failure to do so promptly may result in your claim being denied.