AR-15 Rifle Buffer Spring

Description

OVERVIEW – AR-15 RIFLE BUFFER SPRING – MIL-SPEC RIFLE LENGTH RECOIL SPRING

The AR-15 Rifle Buffer Spring is the essential Mil-Spec rifle-length recoil spring that powers your AR-15 rifle buffer system, driving the bolt carrier group forward, stripping fresh rounds, and ensuring reliable cycling with fixed A1 and A2 rifle stocks. Manufactured from premium chrome silicon or chrome vanadium spring steel wire to exact Mil-Spec dimensions, this rifle buffer spring is longer than carbine springs at approximately 12.75 inches with 41-42 coils, delivering the correct spring rate for smooth, consistent operation with rifle-length buffer tubes. Whether you are building a classic 20-inch rifle, a DMR-style precision build, or restoring an A2 service rifle, this rifle buffer spring provides the factory-spec tension needed for proper feeding, locking, extraction, and ejection. Heat-treated and stress-relieved for durability, it resists taking a set, maintaining its length and power through thousands of firing cycles without weakening, causing short-stroking, or inducing malfunctions.

Designed for use with standard AR-15 rifle buffers and rifle-length buffer tubes found on A1 and A2 fixed stocks, this spring is compatible with all standard AR-15 calibers including .223 Remington, 5.56 NATO, .300 Blackout, and .308 Winchester when used with appropriate rifle buffer systems. It provides the correct counter-force to absorb recoil energy from the buffer, slowing the bolt carrier group during rearward travel and then driving it forward with authority to chamber the next round and lock the bolt into battery. The precision-wound coils ensure smooth compression without binding, kinking, or scratching inside the buffer tube, contributing to quieter operation and reduced wear. An essential replacement part for worn springs that have lost length or tension, and a must-have spare for any AR-15 rifle build or armorer’s parts inventory.

WHY YOU NEED THIS AR-15 RIFLE BUFFER SPRING

The power stroke that keeps your rifle-length AR-15 running reliably.

1. Mil-Spec Chrome Silicon Steel With Heat-Treated Durability:
This rifle buffer spring is manufactured from premium chrome silicon spring steel wire that has been precision wound, heat-treated, and stress-relieved to exact Mil-Spec rifle length specifications, ensuring consistent spring rate and long-term durability that cheap music-wire springs cannot match. Unlike low-quality springs that take a set after a few hundred rounds, losing length and tension, which causes short-stroking, failure to strip rounds from the magazine, and failure to lock into battery, this spring maintains its 12.75-inch free length and correct 41-42 coil count through tens of thousands of cycles, preserving reliable cycling in all conditions. The chrome silicon material offers superior fatigue resistance, high-temperature stability, and corrosion resistance, preventing rust and weakening even after extended storage or exposure to cleaning solvents. The coils are precision-ground flat on the ends to sit squarely against the buffer and buffer tube end, preventing tilting, binding, or uneven wear that can cause noisy operation and accelerated buffer tube wear. This attention to metallurgy and finishing ensures smooth, quiet compression and expansion with every shot, reducing felt recoil and improving follow-up shot accuracy. Whether you shoot occasionally or run high round counts in competition or training, this spring delivers the consistent power needed for positive feeding and lockup.

2. Correct Rifle-Length Spec For A1 / A2 Fixed Stock Systems:
Engineered specifically for rifle-length buffer systems, this spring provides the correct length, coil count, and spring rate for use with standard rifle buffers and rifle-length buffer tubes found on A1 and A2 fixed stocks, as well as rifle-length aftermarket fixed stocks and precision rifle stocks. It is longer and has more coils than carbine springs, delivering the proper dwell time and bolt velocity for reliable operation with 20-inch rifle gas systems and other rifle-length configurations, ensuring the bolt carrier group has enough rearward travel to extract and eject reliably while returning with enough force to strip rounds and lock positively. It is fully compatible with standard Mil-Spec rifle buffers and works with all standard AR-15 bolt carrier groups in .223, 5.56, .300 BLK, and similar calibers using rifle buffer systems. Using the correct rifle spring versus a carbine spring in a rifle tube prevents over-gassing symptoms, excessive recoil, and premature wear on the receiver extension and buffer. This correct-spec spring restores factory function to worn rifles showing signs of weak cycling, and ensures new builds function reliably from the first round. Perfect for classic M16A2 clones, National Match rifles, and modern DMR builds that utilize fixed rifle stocks for stability and accuracy.

3. Easy Drop-In Replacement And Essential Maintenance Item:
Replacing a buffer spring takes seconds – simply unscrew the lower receiver’s buffer tube cap if applicable or slide out the buffer and old spring from the rifle tube, then drop in the new spring with the buffer on top, ensuring the spring seats squarely. No tools or gunsmithing required for standard replacement, making it an easy maintenance item that can dramatically improve reliability. As a wear item that gradually loses tension over thousands of rounds or years of being stored compressed, the buffer spring is one of the most common causes of cycling issues in AR-15 rifles – if your rifle is short-stroking, failing to pick up rounds, or not locking back on empty, a fresh rifle spring often solves it instantly. Keeping a spare on hand is cheap insurance that prevents downtime at the range or in the field. Whether you are building a new rifle from a stripped lower and fixed stock kit, refurbishing a surplus rifle, or performing preventative maintenance on a high-round-count duty rifle, this affordable, factory-spec rifle buffer spring restores like-new cycling performance and ensures your AR-15 runs smoothly for thousands of rounds to come.

THE POWER BEHIND RELIABLE RIFLE CYCLING.

SPECIFICATIONS:
Type: Rifle Buffer Spring / Recoil Spring – Mil-Spec Rifle Length
Material: Chrome Silicon Spring Steel – Heat Treated – Stress Relieved – 12.75″ Length – 41-42 Coils – Flat Ground Ends
Compatibility: Rifle-Length Buffer Tubes – A1 / A2 Fixed Stocks – Standard Rifle Buffers – .223 / 5.56 / .300 BLK – Drop-In
Function: Drives the bolt carrier forward – Ensures Reliable Feeding And Lockup – Maintains the correct spring rate for rifle systems