Cross Machine Tool Ultra Precision AR-15 Upper Receiver - No Forward Assist
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Cross Machine Tool
Overview
The Cross Machine Tool Ultra Precision AR-15 Upper Receiver is a stripped, slick side receiver designed to provide a streamlined profile for your build. Its lack of a forward assist not only enhances the aesthetics but also reduces weight, making it an ideal choice for builders looking for a minimalist setup. This upper receiver is commonly used in carbine-length gas system setups, particularly for 5.56 NATO caliber rifles.
Specifications
Cross Machine Tool Ultra Precision AR-15 Upper Receiver - No Forward Assist
August 2026 on GunPartPicker
Cross Machine Tool Ultra Precision AR-15 Upper Receiver - No Forward Assist ranked #168 of the 690 upper receivers builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #237 of the 1,566 upper receivers builders have added.
It was in stock most days in August 2026, and today the one retailer we track has it in stock. Prices barely moved in August 2026, holding around $158, so there haven't been real sales lately. Buying today, the lowest price is $158 at Primary Arms, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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Read the guide: Most Popular AR-15 Upper Receivers →Frequently Built With
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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