G&G M4 AEG Hop Unit (Plastic)(B Grade)

Price range: £2.00 through £3.50

B-Grade boneyard hop-up unit for G&G M4 series AEGs
Plastic construction, intended for G&G M4 platform repairs
Used, ex-display or salvage stock, sold as spares or for repair
May show cosmetic wear or minor handling marks
No warranty, aimed at techs and budget builders
Confirm fitment against your G&G model before buying

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Description
Specification

What This Part Is

This is a plastic hop-up unit listed for G&G M4 series airsoft AEGs, offered from our boneyard as a B-Grade spare. The hop unit holds the hop rubber around the inner barrel and applies backspin to each BB, making it central to range and accuracy on any M4 build.

B-Grade Condition Explained

B-Grade means the unit is used, ex-display or salvage. Expect possible cosmetic wear and note that boneyard units may not include every small part. It is sold as spares or for repair with no warranty and described honestly rather than as pristine.

Who It Is For

This suits G&G M4 owners, airsoft technicians and project builders who want a platform-matched chamber for a repair or budget build without paying full price for a new unit.

Fitment and Compatibility

It is intended for G&G M4 replicas, but as a generic salvage part we cannot guarantee a cross-brand fit. Compare against your existing unit, inner barrel and gearbox shell before fitting. See more airsoft accessories for hop internals.

Need It Fitted?

Our Kent workshop offers airsoft gun repair and servicing and can fit and test hop units as part of a rebuild or service.

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

General
Brand	Boneyard
Platform	G&G M4 series airsoft AEG
Other
Material	Plastic
Condition	B-Grade (used, ex-display or salvage)
Part type	AEG hop-up unit (chamber)
Sold as	Spares or for repair
Warranty	None (boneyard item)
Boneyard	#101-G+G Hop Unit (Plastic)(Grade B), #102-G+G Hop Unit (Plastic)(Grade B), #103-G+G Hop Unit (Plastic)(Grade B), #104-G+G Hop Unit (Plastic)(Grade B), #105-G+G Hop Unit (Plastic)(Grade B), #106-G+G Hop Unit (Plastic)(Grade B), #107-G+G Hop Unit (Plastic)(Grade B), #108-G+G Hop Unit (Plastic)(Grade B), #111-G+G Hop Unit (Plastic)(Grade B), #112-G+G Hop Unit (Plastic)(Grade B), #113-G+G Hop Unit (Plastic)(Grade B)

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Frequently asked questions

Is this a genuine G&G part?

It is listed as a G&G M4 hop unit from our boneyard. As B-Grade salvage stock we describe it honestly and recommend comparing it against your own G&G unit to confirm the match.

What does B-Grade mean?

It means the unit is used, ex-display or salvage. It may show cosmetic wear and is sold as spares or for repair, suiting techs and project builds rather than a new boxed part.

Will it fit other M4 replicas?

It is intended for G&G M4 series AEGs. Other brands may differ, so as a salvage part we cannot guarantee cross-brand fitment. Compare against your barrel and gearbox first.

Does it include hop rubber and nub?

Not necessarily. Boneyard units may arrive without the rubber, nub or adjustment parts, so inspect on arrival and add fresh internals for best results.

Is there any warranty?

No. It is sold as a boneyard spare without warranty, for repair and project use where the buyer fits and tests the part.

G&G M4 AEG Hop Unit (Plastic)(B Grade)