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Sons of Liberty Gun Works Castle Nut Class 3B Threads Black

Sons of Liberty Gun Works Castle Nut Class 3B Threads Black

Sons Of Liberty Gun Works · Buffer Tubes & Springs

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Best price

$25.00at Kentucky Gun Co

In stock checked Oct 31, 2026

Buy at Kentucky Gun Co

Compare 4 stores

Where to buy

StorePriceAvailabilityBuyAdd to build
Kentucky Gun Co Best price $25.00checked Oct 31, 2026 In stock Buy at Kentucky Gun Co
Ammunition Depot $31.49checked Oct 31, 2026 In stock Buy at Ammunition Depot
OpticsPlanet $33.49Salechecked Oct 31, 2026 In stock Buy at OpticsPlanet
Battlehawk Armory $25.00checked Oct 31, 2026 Check store Buy at Battlehawk Armory

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

Lowest in-stock price in the last 30 days: $25.00 at Kentucky Gun Co. Dashed line = out of stock. Tracking since Oct 28, 2026.

Show the prices as a table
StoreLatestLowestHighest
Ammunition Depot$31.49$31.49$31.49
Battlehawk Armory$25.00$25.00$25.00
Kentucky Gun Co$25.00$25.00$25.00
OpticsPlanet$33.49$33.49$33.99

Since Oct 28, 2026.

About this part

The Sons of Liberty Gun Works Castle Nut Class 3B Threads Black is a buffer part from Sons Of Liberty Gun Works. It's sold by 4 stores (3 in stock), from $25.00 to $33.49. The lowest in-stock price in the last 30 days was $25.00 at Kentucky Gun Co.

Specifications

Manufacturer
Sons Of Liberty Gun Works
Material
Steel

From the manufacturer

Sons of Liberty Gun Works Castle Nut Class 3B Threads Black. The SOLGW Castle Nut is made from 17-4 Stainless steel which is nitride treaded for maximum corrosion resistance. The face of our Castle Nut is ground flat for maximum surface contact with an end plate and features 6 deep staking recesses for maximum material displacement and more holding force than previously possible. The rear is also beveled between the drive notches for comfort. The SOLGW Castle Nut is machined with Class 3B threads for maximum thread engagement and rock solid security. Lastly the Castle Nut is extended beyond the typical mil-spec length for added material strength at the junction of the lower and the receiver extension (buffer tube); a potential weak spot. This makes it compatible with Intermediate/A5 length extensions only as it may prevent some stocks from fully collapsing on carbine length tubes. Specifications for Sons of Liberty Gun Works Castle Nut: Manufacturer: Sons of Liberty Gun Works Gun Model: AR-15 Color: Black Fabric/Material: 17-4 Stainless Steel Finish: Nitride Features of Sons of Liberty Gun Works Castle Nut 17-4 Stainless Steel Nitride Treated Class 3B threads 6 Deep staking notches Extended Length Package Contents: Sons of Liberty Gun Works Castle Nut What firearm models does the manufacturer say Sons of Liberty Gun Works Castle Nut is compatible with? The manufacturer suggests that Sons of Liberty Gun Works Castle Nut is compatible with AR-15Sons of Liberty Gun Works SOLGW-CASTLENUT: Castle Nut Class 3B Threads Black

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$25.00 at Kentucky Gun Co
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