ActionGunner
JP-5/MP5 Roller Replacement Kit, -2
JP Enterprises
Maintenance · Rifle Parts & Upgrades · USPSA
SKU JP5-RK-2

JP-5/MP5 Roller Replacement Kit, -2

$33.95

// PROOF, NOT ADJECTIVES
JP roller kit for the JP-5 and H&K MP5 in -2: two bearing-steel rollers plus retainer spring and pin. Measure bolt gap first; pick the size that brings it back into spec.
Rollers are the wear item that sets bolt gap on a roller-delayed gun, and bolt gap is what decides whether a JP-5 cycles. This kit carries the -2 size: rollers two sizes under standard, for bringing an over-tight bolt gap back into spec.
JP machines the rollers from a proprietary bearing steel and finishes them to outlast the aftermarket rollers sold for MP5-pattern guns. Each kit has two rollers, a roller retainer spring, and the spring pin, so one kit does one bolt head.
One thing to know: the rollers fit the H&K MP5, but JP says the roller retainer spring in the kit does not. Clones should be checked for H&K-standard parts. And the size is not a guess: measure bolt gap first with the gauge set, swap, then measure again, because the whole point of a roller change is landing inside JP's gap window.
The trade-off is that buying the wrong size solves nothing. A shooter who does not know the current gap should start with the gauge set, not the rollers.
JP-5 and H&K MP5 shooters whose bolt gap measurement calls for -2 rollers, and high-volume PCC competitors keeping a spare set on hand.

Out of stock

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SKU JP5-RK-2 Categories , , Tags , , , , , , , , , , , , Brand:
ManufacturerJP Enterprises
ModelJP-5 Roller Replacement Kit
Manufacturer Part #JP5-RK-2
Roller Size-2
Sizes Offered by JPStandard, +2, +4, -2, -4
MaterialProprietary bearing steel
Contents2 rollers, roller retainer spring, spring pin
PlatformJP-5; H&K MP5 (rollers only; retainer spring is JP-5 specific)
Country of OriginUSA

Description

The JP-5/MP5 Roller Replacement Kit in -2 contains two -2 rollers, a roller retainer spring, and a spring pin for the JP-5 roller-delayed carbine. JP makes the rollers from a proprietary bearing steel and offers them in five sizes (Standard, +2, +4, -2, -4) to bring the bolt gap of a worn JP-5 or H&K MP5 back into working range.
This listing is the -2 size: rollers two sizes under standard, for bringing an over-tight bolt gap back into spec. Bolt gap should be measured before choosing a size and confirmed again after installation.
JP’s rollers are compatible with the H&K MP5. The roller retainer spring in the kit is JP-5 specific and does not fit the MP5. Owners of non-H&K MP5 clones should verify H&K-standard parts compatibility before buying.
What’s Included:
  • Two -2 rollers
  • One roller retainer spring (JP-5 specific)
  • One spring pin
What’s NOT Included:
  • Bolt gap gauges (see JP-5 Bolt Gap Gauge Set)
  • Other roller sizes (each size is a separate kit)
  • Tools
Disclosure: Action Gunner is an authorized JP Enterprises dealer and stocks this part in the Pro Shop. Product facts on this page come from JP unless noted.

RUNS WITH THIS

Pairs with: JP-5 Bolt Gap Gauge Set, JP-5 Maintenance Kit, other JP-5 roller sizes

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