ActionGunner
JP Enhanced Reliability Spring Kit
JP Enterprises
AR-15 Build · Rifle Parts & Upgrades
SKU JPS3.5T

JP Enhanced Reliability Spring Kit

$10.95

// PROOF, NOT ADJECTIVES
JP Enterprises three-spring fire control kit (trigger, hammer, disconnector) for AR-15 and AR-10. JP rates a 3.5 to 4.0 pound pull with JP trigger parts while keeping ignition reliable on hard primers. Springs only. Not for the JPFC-M modular trigger.
This is a three-spring replacement set (trigger, hammer, and disconnector) built to do two things at once. JP rates the kit at a 3.5 to 4.0 pound pull when paired with JP fire control parts. The other job matters more for reliability: the hammer spring is tuned to keep ignition consistent. JP notes that a lighter hammer spring can fail to light off hard primers, so this set is shaped to hold a clean trigger while still driving NATO-spec and harder foreign primers.
One thing to know: this kit is designed around JP fire control components. JP states it will not necessarily produce a meaningful change on standard mil-spec trigger parts, and it will not work in the JPFC-M modular trigger. On a duty or large-frame build, JP also recommends domestic ammo to guarantee ignition.
This is a tuning and maintenance part, not something a shooter feels on the clock past the lighter pull. If a JP trigger group is being refreshed or built, it is an inexpensive, sensible piece. On a stock mil-spec trigger, the gain is limited.
USPSA, 3-Gun, multigun, and PCSL 2-Gun shooters building or refreshing a JP fire control group on an AR-15 or AR-10 who want a tuned pull without losing ignition reliability. Assumes JP trigger parts; limited benefit on stock mil-spec triggers.

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SKU JPS3.5T Categories , Tags , , , , , , , , , , , , , Brand:
ManufacturerJP Enterprises
ModelEnhanced Reliability Spring Kit (JPS3.5T)
TypeFire control spring set (3 springs)
ContentsYellow trigger spring, red hammer spring, disconnector spring
Rated Pull (with JP parts)3.5 to 4.0 lb
CompatibilityMost component-style AR fire control systems; AR-15 and AR-10
Not CompatibleJP JPFC-M modular trigger
Country of OriginUSA

Description

The JP Enterprises Enhanced Reliability Spring Kit is a three-piece fire control spring set for AR-15 and AR-10 pattern rifles. It includes a yellow trigger spring, a red hammer spring, and a disconnector spring.
The set is built to balance a lighter, controllable pull against reliable primer ignition. JP rates it at a 3.5 to 4.0 pound pull when used with JP fire control parts. The hammer spring is tuned so it still strikes hard enough for low-sensitivity primers, which JP notes are common in NATO-spec and various foreign-made ammunition. On large-frame ARs and duty or defense rifles, JP strongly recommends domestic ammunition to ensure full ignition.
Compatibility: this kit is intended for use with JP trigger components. JP states it will function with most component-style AR fire control systems but will not necessarily produce a substantial change on standard AR-15 trigger parts. It will not function in the JP JPFC-M modular trigger. Confirm your trigger type before ordering.
What's Included:
  • One JP yellow trigger spring
  • One JP red hammer spring
  • One disconnector spring
What's NOT Included:
  • Trigger, hammer, disconnector, or any fire control components (springs only; source a JP fire control group separately for the rated pull weight)

RUNS WITH THIS

Pairs with: JP MK IV Trigger Package, JP Fire Control Module, JP Speed Hammer, JP Oversize Anti-Walk Pins

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