Strike Industries Advanced Receiver Extension (AR 15/10 Buffer Tube)
The Strike Industries Advanced Receiver extension brings an updated aesthetic and increased functionality to an often neglected, yet highly important component of the AR-15/AR-10 weapon system. The scalloped surfaces decrease friction with tight-fitting stocks and shave weight while retaining mass in critical stressed areas. Further enhancements include a supported buffer-retaining tab that also makes it easier to index your receiver extension.  The SI Advanced receiver extension is machined from 7075-T6 aluminum, providing much greater strength than standard 6061 tubes.  Upgrade your AR and stand out from the pack with the SI Advanced Buffer Tube.
Features
- 7-position MIL-SPEC diameter buffer tube
- Fits onto any standard AR-15 receiver.
- Finer length of pull adjustment.
- Supported buffer retainer
- Compatible with Strike Industries Pit Viper Stock
Specifications
- Materials: 7075-T6 Aluminum
- Length:7.28″
- Tube Dia. 1.145″
- Available Colors: Â Black | Blue | FDE | Red
- Weight: 3.8oz
NOTE: Not compatible with rifle-length buffers or rifle-length springs. Cannot work with the A5 buffer system. Internal length of buffer tube is the same as a standard carbine buffer tube. Due to various factors during the anodization process, the color lines from batch to batch of a given product may vary.









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