SKU: AMAM20
UPC: 640901513614
MPN: D2-K020-B000
The Anderson Manufacturing AR Rifle Length Buffer Spring is a precision-engineered recoil management component designed for AR-platform rifles built to mil-spec standards. This music wire buffer spring is essential for shooters and gunsmiths who demand reliable, consistent bolt carrier group cycling across various ammunition types and environmental conditions. Whether you're assembling a patrol rifle, duty carbine, or precision build, a quality buffer spring is non-negotiable for reliable function and longevity.
Manufactured from high-tensile music wire, this Anderson buffer spring provides consistent spring rate and durability under repeated firing cycles. The rifle-length configuration is specifically engineered to work with standard rifle buffer tubes and weights, delivering proper recoil impulse control and bolt unlocking timing. Music wire construction offers superior fatigue resistance compared to lower-grade materials, ensuring the spring maintains its rate specification over thousands of cycles without permanent deformation or loss of tension. This component is critical for proper carrier tilt, ejection pattern, and overall system reliability.
Law enforcement armorers, military personnel, and civilian shooters building or servicing AR rifles will find this Anderson buffer spring essential for any rifle-length system using standard M4-pattern buffer tubes. Installation is straightforward—simply insert into the buffer tube behind your selected buffer weight and secure with the castle nut and end plate. Anderson Manufacturing components are designed for seamless integration with mil-spec AR systems and are a trusted choice for duty builds and high-round-count training platforms where reliability cannot be compromised.
WARNING ⚠️
You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
Purchasing a Firearm? Click HERE to see our firearm purchasing guide.