Battle Arms Development Receiver Extension Castle Nut Mil-Spec AR-15/M16 Black

Name: Battle Arms Development Receiver Extension Castle Nut Mil-Spec AR-15/M16 Black
Brand: Battle Arms Development
Availability: InStock

Battle Arms Development · Buffer Tubes & Springs

No ratings yet

Best price

$7.95at MidwayUSA

In stock checked Oct 31, 2026

Buy at MidwayUSA

Compare 2 stores

Where to buy

Store	Price	Availability	Buy	Add to build
MidwayUSA Best price	$7.95checked Oct 31, 2026	In stock	Buy at MidwayUSA
OpticsPlanet	$6.99Salechecked Oct 31, 2026	Out of stock	Buy at OpticsPlanet

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

Show

Lowest in-stock price in the last 30 days: $7.95 at MidwayUSA. Dashed line = out of stock. Tracking since Oct 27, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
MidwayUSA	$7.95	$7.95	$7.95
OpticsPlanet	$6.99	$6.99	$6.99

Since Oct 27, 2026.

About this part

The Battle Arms Development Receiver Extension Castle Nut Mil-Spec AR-15/M16 Black is an AR-15 buffer part from Battle Arms Development. It's sold by 2 stores (1 in stock), from $6.99 to $7.95. The lowest in-stock price in the last 30 days was $7.95 at MidwayUSA.

Specifications

Manufacturer: Battle Arms Development
Type: Buffer Tube
Platform: AR-15

From the manufacturer

Battle Arms Development Receiver Extension Castle Nut Mil-Spec AR-15/M16 Black. receiver extension lock nut (castle nut) for use on AR15 carbines with an adjustable stock. Perfect for your new build or as a direct replacement for worn out parts. Package Contents: Battle Arms Development AR-15/M16 Receiver Extension Nut Battle Arms Development MIL-SPEC-CASTLE-NUT: Receiver Extension Castle Nut Mil-Spec AR-15/M16 Black