Dark mode is

Armaspec Gen 4 Stealth Recoil Spring

Recoil Spring

In stock

Armaspec Gen 4 Stealth Recoil Spring 

As low as $76.49
Rainier Arms Free Ground Shipping

The Stealth Recoil Spring™ SRS™ GEN4 is a self-contained multi-stage drop-in replacement for your standard buffer and spring. The SRS™ is designed to keep the buffer spring from rubbing against the inner wall of the buffer tube providing smooth, quiet operation and the second stage helps reduce the felt recoil significantly.



  • Drop-in replacement for standard buffer and spring
  • Reduce felt recoil
  • Keep the buffer spring from rubbing against the inner wall of the buffer tube
  • Buffer mass is designed to stay under constant tension against the bolt carrier
  • Made in the U.S.A.



  • Length: 7.18"
  • Equivalent Weight:
    • C: 3.3 oz.
    • H: 3.8 oz.
    • H2: 4.7 oz.
    • H3: 5.6 oz.
    • BB: 5.7 oz.
    • 9MM: 6.4 oz.
    • AR10: 5.7 oz.
  • Actual Weight - Complete System (new version with stainless steel weight):
    • C: 6.2 oz.
    • H: 6.6 oz.
    • H2: 7.4 oz.
    • H3: 8.0 oz.
    • BB: 7.5 oz.
    • 9MM: 9.5 oz.
    • AR10: 7.09 oz.



  • AR-15 with carbine-length buffer tube
  • AR-10 in .308 and 6.5 Creedmoor with carbine-length buffer tube


Installation and Maintenance: Before installing the recoil spring, it is always a good idea to retighten the screws using either using two 3/32 hex key and fully tightening both screws at the same time or using one 3/32 hex key and using the hole in the rod for leverage.


Please Note: 

  • The new GEN4 version does not have the O-ring on the weight. 
  • To eliminate any potential failure points they changed the screw to a roll pin across the plastic end piece and the cap is machined on the rod replaced the snap ring with a washer.
  • Most bolt carriers have a rear opening of over .60″, there are a couple of bolt carriers in the market place that have a rear opening of under .60″ and will not function with the SRS.
  • 9mm Bolt Carriers ONLY: For proper function of the SRS-9 in your 9mm rifle or pistol, the extra weight on the back of the bolt carrier needs to be removed. It is held in with a spring pin.
More Information
Product Type Recoil Spring
Manufacturer Armaspec

Product Recommendations

Google Customer Reviews Google Customer Reviews