Double O-Ring Cylinder Head (B Grade)

£2.00

B-Grade boneyard spare: may show cosmetic wear or be ex-display
Double O-ring design aims to improve the air nozzle to cylinder head seal
Sold as spares or for repair and budget project builds
Ideal stock for airsoft technicians and gearbox tinkerers
Typically supplied with no warranty as a salvage part
Confirm gearbox version and fitment against your own parts before buying

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Description
Specification

What This Part Is

This is a double O-ring style cylinder head for an AEG airsoft gearbox, offered from our boneyard as a B-Grade spare. The cylinder head sits at the front of the cylinder and guides the air nozzle, so a good seal here is important for consistent air delivery. The double O-ring layout is designed to improve that seal compared with a single ring head.

B-Grade Condition Explained

B-Grade means the item is used, ex-display or salvage. It may carry cosmetic wear, light marks or handling scuffs, and it is sold as spares or for repair with no warranty. We describe these parts honestly rather than claiming pristine condition, so please buy with that understanding.

Who It Is For

This head suits airsoft technicians, hobby builders and anyone maintaining a spares box for gearbox rebuilds. If you are assembling a budget project or need a stand-in part while sourcing a new one, a boneyard head like this can be a cost-effective option.

Fitment and Compatibility

Because this is a generic salvage part we cannot promise an exact model match. Measure and compare against your existing head, cylinder and nozzle before fitting. Browse more airsoft accessories for O-rings and related internals.

Need It Fitted?

Not confident stripping a gearbox? Our Kent workshop offers full airsoft gun repair and servicing, so we can fit and function-test parts like this during a rebuild.

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

General
Brand	Boneyard
Other
Condition	B-Grade (used, ex-display or salvage)
Part type	AEG gearbox cylinder head
Design	Double O-ring seal
Sold as	Spares or for repair
Warranty	None (boneyard item)
Fitment	Buyer to confirm gearbox compatibility

Recommended upgrades & accessories

Frequently asked questions

What does B-Grade mean for this cylinder head?

B-Grade means the part is used, ex-display or salvage stock. It may show cosmetic marks and is sold as spares or for repair, so it suits techs and budget builds rather than as a boxed new item.

Which gearbox does it fit?

It is a generic AEG cylinder head. Because it is a boneyard part we cannot guarantee an exact model match, so please measure and compare against your existing head and nozzle before purchase.

What is the point of the double O-ring?

The double O-ring design is intended to give a firmer seal between the air nozzle and the cylinder head, which can help air efficiency. On a used part the O-rings should be inspected and replaced if worn.

Does it come with a warranty?

No. As a B-Grade boneyard spare it is sold without warranty. It is intended for repair work and project builds where the buyer is comfortable fitting and testing the part.

Can you fit it for me?

Yes. Our Kent workshop offers airsoft repair and servicing, so we can install and test parts like this as part of a gearbox rebuild. See our repair page for details.

Double O-Ring Cylinder Head (B Grade)