Scorpio-10 Furniture and Controls Lower

Our lowers are assembled by SOTAR-trained master armorers in North Carolina using components manufactured exclusively in the USA.

 

The Scorpio-10FC lower makes targeted improvements to the EM model intended to further enhance the ergonomics, operability, and reliability of an already great weapon system.

The Scorpio-10FC retains the following features of the EM model:

• Aero Precision M5 Stripped Lower Receiver
  • The Aero M5 lower has the best combination of features, quality, and value for an AR-10.  It offers unlimited potential for a build.
• Everything Mil-Spec or Better
  • We build our lowers with true Mil-Spec or better components.  It is important to emphasize this because many claim to use Mil-Spec components, but use components made of inferior materials/quality.  We refuse to cut corners to save a buck.
• Buffer: Standard AR-10 Rifle Buffer

 

The FC model includes the following upgrades to the EM standard:

• Buffer Spring: David Tubb Flat Wire AR-10 Buffer Spring
  • The buffer spring is one of the most forgotten/neglected components of the AR, but is also one of the most important. The David Tubb Flat Wire Spring is is phenomenal upgrade, providing immediate improvement to the performance and longevity of the buffer system. The Tubb FWS offers additional closed bolt resistance (which increases the bolt lock time), and offers a more gradual and consistent increase in spring pressure through the cycle of the reciprocating mass.
• Buttstock: Luth-AR MBA-1 Rifle Buttstock
  • The MBA-1 adds significant adjustability to the MBA-2 stock.  This helps to ensure proper alignment of your body to the gun for optimal interaction.  And this is one of the lightest full-function rifle stocks you can buy.
• Grip: ERGO Tactical Deluxe Pistol Grip
  • The grip of a rifle should be beefier than the grip of a carbine.  It should fit nicely into a relaxed hand and have a place to rest your thumb.  The ERGO Tactical Deluxe grip fits the bill perfectly for a precision rifle.
• Magazine Release Button: Odin Works XMR3 Extended Magazine Release Button
  • You’re gonna drop a mag every 30 rounds or so. When you do, you’re out of commission. Finding and engaging the mag release button stands between your last pew and your next pew. While practice is important, design of the magazine release button can help. For the FC and DC level, we move up to the Odin Works XMR3.
• Pivot/Takedown Pins: Battle Arms Development Steel Enhanced Pin Set
  • Pivot and takedown pins aren’t sexy and you may not use them often. But when you do, you want disassembly of the receivers to be a piece of cake. For the FC and DC levels, we upgrade the pins to Battle Arms Development pivot/takedown pins, which are slightly longer, have an improved grip surface, and have depressions on the left side of the receiver to aid in disengaging.
• Safety Selector: Radian Talon Ambidextrous Safety Selector
  • We like to be able to control our weapon from either side of the receiver. Most people do. For the FC and DC levels, we move up to the gold standard in safeties: the Radian Talon.
• Trigger: HIPERFIRE Enhanced Duty Trigger Sharp Shooter (EDTSS) Trigger
  • The trigger is an AR’s “go” button. While the Schmid trigger in our EM model is great, we see the trigger as one of the first controls to upgrade. In the FC model, we move up to the heavy-hitting HIPERFIRE EDSS.

 

Critical finishes and dimensions of individual components are inspected before they we accept them into inventory.  To learn more about our quality control gauging and inspection, visit our Quality Promise page.

Each upper receiver includes the following assembly and QC steps (full schedule of all 82 points of inspection for our builds can be found in our Quality Promise page):

• Receiver extension (buffer tube) threads lubricated with AeroShell grease.
• Receiver extension torqued to 37 ft. lbs.
• Trigger sear, hammer sear notch, hammer hook, and disconnector honed, as necessary.
• Full lubrication with our own lubricant blend per our standard procedure.
• Full safety and function check per our standard procedure.
• Live fire test with M193 or M855.

 

The tables below detail what we put in the lower and what you are paying.

Scorpio-10FC Lower Receiver (Black)

 

Scorpio-10FC Lower Receiver (FDE)