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Strike Industries
Overview
The Strike Industries Viper Modular Fixed Stock is a black stock designed for enhanced stability and comfort on your AR-15 build. As a fixed stock, it provides a solid platform that eliminates any play, which is particularly beneficial for precision shooting and maintaining consistent cheek weld. This stock is often found on mid-length gas system builds chambered in 5.56 NATO, making it a practical choice for those looking to optimize their rifle's performance.
Strike Industries Viper Modular Fixed Stock, Black - SI-VIPER-MFS-BK
Builders have been adding the Strike Industries Viper Modular Fixed Stock, Black - SI-VIPER-MFS-BK to their builds on GunPartPicker since February 2026. All time, it ranks #265 of the 431 stocks and braces builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 5 of the 7 retailers we track have it in stock. The best price crept up from $41.17 to $49.52 over August 2026. Buying today, the lowest price is $47.95 at Primary Arms, above August's low of $41.17, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every stock & brace by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Stock Popularity Report →Check it against the live catalog:
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