The Borka Tools Long Reach Precision Rifle Action Bits (LRS-SET) is a specialized 3-piece hand-tool accessory set engineered for accessing deeply recessed and obstructed action fasteners on bolt-action and rimfire rifle platforms. Machined from premium S2 tool steel hardened to HRc 58–60, these manual 1/4-inch hex drive tools allow off-axis fastener engagement without requiring the disassembly of rifle chassis panels, skins, or trigger guards.

Key Features

• Extended Reach: Includes 4.0-inch (101.6 mm) long ball-end hex bits that access deeply recessed fasteners through narrow chassis openings.
• Off-Axis Engagement: Ball-end hex profiles allow positive driver engagement at an angle where straight-line access is obstructed by magazines or chassis geometry.
• AICS Action Compatibility: The dedicated 3/16-inch ball-end bit engages Accuracy International Chassis System (Gen 1 and Gen 2) action screws without requiring skin removal.
• Rimfire V-Block Access: The 5/32-inch ball-end bit reaches recessed 10-32 clamp screws on Ruger 10/22 V-blocks and similar rimfire action fasteners.
• Slim-Profile Extension: The magnetic 1/4-inch drive extension features a slim 0.40-inch (10.16 mm) maximum outer diameter to prevent marring surrounding chassis ports.
• Universal Drive Fit: Standard 1/4-inch hex shank pairs with Borka torque drivers, standard 1/4-inch ratchets, and magnetic bit holders.

Specifications

• 3/16" Ball-End Hex Bit Length: 4.0" (101.6 mm)
• 5/32" Ball-End Hex Bit Length: 4.0" (101.6 mm)
• 1/4" Extension Working Reach: 4.0" (with a maximum outer diameter of 0.40" / 10.16 mm)
• Material: S2 tool steel
• Hardness: HRc 58–60
• Drive Shank: Standard 1/4" hex
• Total Set Weight: Under 100 grams (~3.5 oz)
• Power Requirement: None (manual hand tool)

Who is the Borka Tools Long Reach Precision Rifle Action Bits for?

• Accuracy International chassis owners — access Gen 1 and Gen 2 AICS action screws directly through the stock skins using this precision rifle action bit set with a dedicated 3/16" ball-end hex bit measuring 4.0" (101.6 mm) in overall length.
• Precision rifle shooters and competitors — service recessed rimfire action fasteners and Ruger 10/22 V-block screws using the 5/32" ball-end bit's 4.0" (101.6 mm) reach without removing surrounding chassis hardware.
• Gunsmiths — reach obstructed fasteners through tight chassis ports using this precision rifle action bit set's 1/4" drive extension, which provides a 4.0" working reach with a narrow 0.40" (10.16 mm) maximum outer diameter.

Less suitable for: Applications requiring metric hex (e.g., 4 mm or 5 mm) or Torx (e.g., T27 or T30) fasteners, or extreme torque applications exceeding standard rifle action limits of 45 to 65 in-lbs (5 to 7.3 Nm); these situations require dedicated metric/Torx action bits or straight-cut, flat-profile hex bits to prevent off-axis shearing under heavy loads.