The Armaspec SRS Stealth Recoil Spring is a self-contained multi-stage drop-in replacement for your standard buffer and spring. The Armaspec SRS Stealth Recoil Spring  is designed to reduce felt recoil as well as keep the buffer spring from rubbing against the inner wall of the buffer tube. The buffer mass is designed to stay under constant tension against the bolt carrier and the O-ring on the head of the buffer mass prevents metal on metal contact.

The Armaspec SRS Stealth Recoil Spring comes in 5 variations:

• SRS-Carbine at about 3.3oz equivalent
• SRS-H at around 3.8oz equivalent
• SRS-H2 at around 4.7oz equivalent
• SRS-9 at around 5.3oz equivalent
• SRS-H3 at around 5.6oz equivalent
• SRS-Big Bore 5.7oz
• SRS-308 5.7oz