Mature > Weapons > Gun Care & AccessoriesJp EnterprisesSold by Mile High Shooting Accessories

Jp Enterprises

JPSCS2-ORING-PK: O-Rings for Silent Captured Spring/VMOS(TM) Carrier, 12pk

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Replacement O-rings

For JP Silent Captured Spring

Helps Replace

Worn, deformed, or lost rings

Pack Includes

12 O-rings for multiple replacements

Includes One

Spacer shim for JPSCS fitment

Includes One

Replacement retaining screw

$7.55
View on Mile High Shooting Accessories

You'll be taken to Mile High Shooting Accessories to complete your purchase.

Hunter's Outpost earns a commission from affiliate links at no extra cost to you.

SKU: JPSCS2-ORING-PK

Overview

This replacement pack is intended for maintaining JP Silent Captured Spring and VMOS(TM) bolt carrier setups when the original rings are worn, deformed, or missing. It is a practical option for hunters and shooters who keep their rifles in service and want to address signs of fraying or cracking before the parts are fully compromised. The kit includes 12 O-rings, plus one spacer shim for JPSCS fitment and a replacement retaining screw, giving you the pieces needed for a straightforward refresh.

Why Hunters Choose the Jp Enterprises

Replacement O-rings

For JP Silent Captured Spring

Pack Includes

12 O-rings for multiple replacements

Includes One

Spacer shim for JPSCS fitment

Includes Replacement

Retaining screw

Intended Replacing

Worn, deformed, lost, frayed, or

Key Features

  • Replacement O-rings for JP Silent Captured Spring and VMOS(TM) bolt carrier systems.
  • Helps replace worn, deformed, or lost rings when service is needed.
  • Pack includes 12 O-rings for multiple replacements.
  • Includes one spacer shim for JPSCS fitment.
  • Includes one replacement retaining screw.
  • Replacement is recommended when fraying or cracking appears; sooner for 9mm carbines around 5,000 rounds.

Best Used For

  • Users maintaining a JP Silent Captured Spring or VMOS carrier with worn, deformed, or missing O-rings
  • 9mm carbine owners replacing O-rings after visible fraying or cracking appears
  • Shooters who want a small parts pack with extra O-rings, a spacer shim, and a retaining screw
  • Armorer or range users performing routine upkeep on compatible JP operating system components

Specifications

Brand NameJP
CompatibilityJP Silent Captured Spring or Variable Mass Operating System (VMOS(TM)) bolt carrier
Included Accessoriesone spacer shim for the JPSCS; replacement retaining screw
Quantity12 pk
Replacement GuidanceReplace when rings show fraying or cracking; sooner in 9mm carbines, around 5000 rounds

Pros

  • Replacement O-rings for JP Silent Captured Spring and VMOS bolt carriers
  • Pack includes 12 O-rings for multiple replacements or spares
  • Includes one spacer shim for JPSCS fitment
  • Includes a replacement retaining screw
  • Intended for replacing worn, deformed, lost, frayed, or cracked rings

Considerations & Trade-offs

  • Replacement parts only: this pack is intended for maintaining compatible JP Silent Captured Spring or VMOS bolt carrier setups, not for standalone use.
  • O-rings should be monitored for fraying or cracking and replaced when wear appears, so this is a maintenance item rather than a one-time install.
  • The included spacer shim and retaining screw add fitment support for the JPSCS, but they are specific to that system and may not be needed in every application.
  • The pack is geared toward keeping spare components on hand, which is useful for upkeep but may be more than needed if replacement intervals are infrequent.

Suggested Comparisons

  • AR-15 maintenance parts
  • Bolt carrier group accessories
  • Firearm spring replacement parts
  • Small parts and hardware kits

Suggested Accessories

  • AR maintenance kit
  • Small parts organizer
  • Replacement hardware kit
  • Cleaning supplies

Frequently Asked Questions

What is included in this pack?

The pack includes 12 O-rings, one spacer shim for the JPSCS to help achieve proper fitment, and one replacement retaining screw.

What is included in this pack?

The pack includes 12 O-rings, one spacer shim for the JPSCS to help achieve proper fitment, and one replacement retaining screw.

What products are these O-rings made for?

They are intended to replace worn, deformed, or lost rings from any JP Silent Captured Spring or Variable Mass Operating System (VMOS(TM)) bolt carrier.

What products are these O-rings made for?

They are intended to replace worn, deformed, or lost rings from any JP Silent Captured Spring or Variable Mass Operating System (VMOS(TM)) bolt carrier.

When should the O-rings be replaced?

Replacement should take place when you start to see fraying or cracking of the rings.

When should the O-rings be replaced?

Replacement should take place when you start to see fraying or cracking of the rings.

Is replacement timing different for 9mm carbines?

Yes. The product description notes that fraying or cracking may happen sooner in 9mm carbines, around 5,000 rounds.

Is replacement timing different for 9mm carbines?

Yes. The product description notes that fraying or cracking may happen sooner in 9mm carbines, around 5,000 rounds.

View all 10 questions