B5 SRK EXTENSION KIT BLK
B5 SystemsSKU BSS111331AR-15
MSRP $135, our price $128.25, save $6.75
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Description
The Sierra K Receiver Extension Kit is the proprietary mounting system for the Sierra K Buttstock. All parts are made of mil-spec materials and finishes and proudly Made In The USA.
Features
- Reduced-length 5-position Receiver Extension Constructed of 7075 Aluminum
- Includes a Short Heavy Buffer (3.5 oz), Extra Power Spring, Castle Nut and QD End Plate.
Specs
- SKU
- BSS111331
- MPN
- SRK-1660
- UPC
- 814927024793
- Weight
- 13 oz