Edgi Custom Works SAP (shock absorbing piston) kit for the Silverback HTI, an iridescent anodised SAP piston shown beside the HTI receiver

Pre-Order - Edgi Customs - SAP kit - HTI

Price: £159.99

Tax included. Shipping calculated at checkout.
UK delivery from £4.50, free on orders of £125 or more.

Quantity

Pre-order — dispatched when your batch is ready

Specifications

Fitment HTI

Type Upgrade Kit

Product Information

Edgi Custom Works SAP kit — a shock absorbing piston assembly — for the Silverback HTI.

On a bolt-action rifle most of the noise and vibration you hear is the piston slamming into the cylinder head at the end of its travel. The SAP replaces the standard piston with one that absorbs that impact: a 40% silicone damper takes the hit and a threaded airbrake lets you dial in how much air is allowed to cushion the last of the stroke. The result is a quieter, softer shot cycle and less shock passed into the scope and stock.

It is also a tuning kit. Piston weight changes how the spring behaves, so three seal weights are included — 80g, 90g and 100g — letting you match the piston mass to your spring and cylinder rather than accepting whatever the rifle came with.

In the kit:

Shock absorbing piston, 80g base weight, 100g maximum
316L stainless steel
Polyurethane cap type
Seal weights included: 80g, 90g and 100g
40% softness silicone damper
Threaded airbrake for fine-tuning
Delrin protection ring
Aluminium barrel spacer for base weight spring guide

Fitment: Silverback HTI.

Fitting & Returns

Replicas vary between makers and production batches, so a part can sometimes need work to fit. If you're not confident fitting it yourself, we recommend using an airsoft tech. Not sure a part suits your replica? Email info@ebog-designs.co.uk before you order.

Unfitted, unmarked parts in their original packaging can be returned for a full refund if you ask within 30 days of receiving them. Fitted or altered parts usually can too, less a deduction for any loss in value. Made-to-order items and gift cards have different return rules.

If a part is faulty, not as described or not what you ordered, there's no deduction, even if you've fitted it. Damage from incorrect fitting after delivery isn't a fault, unless it was caused by wrong or incomplete instructions, whether they came with the part or from us. Full details are in our Refund Policy.

Upgrade parts are sold for use within the legal power limits that apply where you are.

Finishes can vary slightly between batches, and colours can look different on screen.

None of this affects your statutory rights.