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Questions & Answers
Is this the spring that goes in between the butt plate at the castle nut that connects to the plunger for the take down pin? Expert Answer

No, it is the spring that goes in the buffer tube. The spring you are looking for can be found in this kit:
https://www.opticsplanet.com/anderson-manufacturing-oops-kit.html

by Carly R., Gear Expert, September 14, 2017

Product Discontinued by Manufacturer

Guntec USA AR-15 A2 Stock Spring has been discontinued by Guntec USA and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Lower Parts, AR15 Buffer Springs yourself to try and find the perfect replacement for you!

Product Info for Guntec USA AR-15 A2 Stock Spring

Full Length A2 Size Steel Fits Full Size Fixed Stockimage

Package Contents:

  • Guntec USA AR-15 A2 Stock Spring

Gun Barrels

114 / 14
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Gun Parts and Accessories

130 / 30
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Gunsmithing Tools & Accessories

115 / 15
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Gun Triggers

116 / 16
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Magazine and Accessories

121 / 21
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Gun Sights

119 / 19
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Gun Stocks

117 / 17
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Mounts, Rings and Accessories

120 / 20
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Related Products to Guntec USA AR-15 A2 Stock Spring

Guntec USA AR-15 A2 Stock Spring Unavailable & Discontinued Models

List of Unorderable Models

  • Guntec USA AR-15 A2 Steel Stock Spring, A2-SPR , MPN: A2-SPR , Code: 2AH-BUS-A2-SPR
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Last updated 2026-09-01 UTC.