Customer Reviews

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  1. Weaker than OEM
    20%
    Disclaimer: the one star is for the part only. TNA offers a great service and awesome customer service and I'm pleased to deal with TNA all the time. They are a 5 stars business.

    Now the review:

    I swapped the spring on my Norinco bolt and kept getting extraction issues. Empty casing left in the chamber or partially extracted.

    Morale of the story: If it isn't broken, don't fix it !

    Review by

    Posted on

  2. Good product
    100%
    I thought these would enhance a SBR/pistol build. It can't hurt having these around.

    Review by

    Posted on

  3. Works
    100%
    Had a reliability problem using steel case cheap Russian and Chinese ammo. In about 350 to 400rnds I would get continuous failures to extract if i wasnt keeping it wet with oil. I noticed i could easily move the extractor with my finger..too easy. I ordered these stronger springs put them in.. big difference. No more problems till many more ends have gone through. Also suggest you put in a doughnut in with these, no more moving the extractor easily with your finger now. Now it will chew through most any case like a demon.

    Review by

    Posted on

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Enhanced Power Extractor Spring

Rating:
80% of 100
In stock
SKU
688738046533
CA$2.77

Similar to a standard mil-spec extractor spring except this one is extra stiff.

Recommended if you have a barrel 16" or longer, with a carbine length (9.75") gas system. The relatively shorter gas system on a longer barrel is harder on the extractor because the extraction cycle happens so fast.

Some companies offer an O-ring to prevent extractor bounce, but the rubber degrades over time, whereas this spring will last much longer being steel instead of rubber. Not recommended to use an O-ring with this spring due to overkill.

Using a stronger spring is also reported to help ensure successful extraction in these situations:
- shooting NATO pressure ammo from a dirty chamber
- shooting steel-cased ammo, where the case takes a longer time to shrink
- overgassing

This won't solve your overgassing issue, but if you like the gas level where it is and you simply want to guarantee ejection, a power spring can help.

Typically a Mil-Spec extractor spring will throw cases near 4 o'clock.  This stronger spring throws them around 2-3 o'clock.

In general, springs are wear items and degrade over time so it is wise to keep one or two extractor springs of some kind in the toolbox.

  • Ready to drop in and go
  • Mil-spec
  • Made by a military contractor
  • Spring steel construction
  • Weight: <1g
  • 4mm tall

You get:

  1. One extractor spring

Compatible with:

  • All mil-spec bolts
  • All mil-spec extractors

Installation Difficulty:

Tools required: None

Installation notes: Note the spring has a wider end. This wide end should be pressed into the cup in the Extractor.