Sota Arms AR-10 LR-308 Rifle Lower Kit with EX Performance Adjustable Stock

Sota Arms AR-10 LR-308 Rifle Lower Kit with EX Performance Adjustable Stock

This is a complete lower build kit for AR-10 and LR-308 platforms. It pairs a USA-made Sota Arms serialized lower receiver with mil-spec components and an Adaptive Tactical EX Performance adjustable stock designed for comfort and control in extended shooting sessions.

Key Features

• USA-made Sota Arms AR-10 lower receiver, anodized black finish
• LR-308 mil-spec lower parts kit with fire control group and A2 grip included
• Adaptive Tactical EX Performance adjustable stock with glass-filled polymer construction
• Extra-power buffer spring (moly-plated, stress-relieved) for reliable cycling
• Mil-spec heavy-duty 6-position carbine buffer tube with 3.76 oz collapsible buffer
• QD sling mount and sling loop for quick attachment options
• US Tactical mil-spec receiver end plate with phosphate finish
• Rubberized buttpad for comfort during extended use

Perfect For

• Builders completing an AR-10 or LR-308 lower receiver from a stripped state
• Shooters who prioritize adjustable stock options for different shooting positions
• Users seeking a domestic-made receiver with mil-spec reliability
• Long-range and precision rifle builds requiring stable platform setup

Stock and Ergonomics

The Adaptive Tactical EX Performance stock uses glass-filled polymer for durability while keeping weight down. Six adjustment positions let you dial in length of pull for different gear configurations or shooting styles. The rubberized buttpad absorbs recoil impulse and prevents slipping during rapid transitions. The integrated QD mount and sling loop give you mounting flexibility without additional hardware.

Component Quality and Compatibility

Sota Arms receivers are machined and hardened to mil-spec tolerances. The lower parts kit includes all internal components needed to complete the receiver—trigger, hammer, disconnector, selector, magazine catch, bolt catch, and required pins and springs. The extra-power buffer spring cycles reliably with both standard and heavy ammunition loads. All components are black anodized or phosphate finished for corrosion resistance.

What You Need to Know

This kit includes everything needed to complete a lower receiver except the stripped lower itself. You'll need to source an AR-10 or LR-308 stripped lower receiver separately. The buffer tube is carbine-length and compatible with standard AR-15 castle nuts and end plates, though the buffer and spring are sized for LR-308 cycling. Assembly requires basic tools and familiarity with lower receiver completion. This is a complete lower kit—upper receiver, barrel, handguard, bolt carrier group, and charging handle are not included.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. BCG and charging handle are not included.