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General | Ordering

ASF-20™ Ambidextrous Rifle and Lower Assemblies

The ergonomics and control of the AR platform have made leaps and bounds in the decades since the development of the original Stoner design. By incorporating some of the best into our design, the ASF-20™ gives both right- and left-handed shooters unparalleled control in a JP rifle. This receiver design combines the A-DAC™ (Ambidextrous Dual Action Catch) system from Radian Weapons with our own JP Ambi Mag. Release. The result is a sleek yet rugged receiver offering full ambidextrous controls for the left-handed shooter plus bolt lockback and release for right-handed shooters without releasing the pistol grip.

Whether for a versatile 3-Gun rig, hunting rifle or duty/defense system shared by multiple users, the ASF-20™ answers the call. The ASF-20™ is compatible with any Mil-spec pattern upper receiver to serve as the cornerstone of any rifle project. Whatever your need, we’ve made the ASF-20™ ambi lower accessible:

  1. Fully custom, complete rifle paired with our JP-15™ upper receiver
  2. Complete lower assembly compatible with any Mil-spec pattern upper assembly
  3. Semi-Auto Chassis System bundled with a JP upper receiver and hand guard
  4. Lower receiver with all proprietary component for the home builder

Rifle Specifications:

Receiver: Machined-from-billet ambi lower using JP Ambi Mag Catch and Radian Weapons A-DAC™ controls with forged JP-15™ upper
Receiver Finish: Matte black with Cerakote upgrade options
Barrel: JP Supermatch™ 416R air-gauged, button-rifled, cryogenically treated barrel Thermo-Fit™ to receiver
Barrel Finish: Polished stainless or Black Teflon®
Muzzle Treatment: JP tactical or competition compensator
Caliber: .223/5.56, 6.5 Grendel, .300 AAC Blackout, .22 LR
Buttstock: Hogue Overmolded, Magpul MOE, Magpul CTR, LUTH-AR MBA-2, or Mission First Tactical BATTLELINK™
Grip: Hogue pistol grip
Hand Guard: MK III or M-LOK Series Hand Guard System
Gas System: JP adjustable
Operating System: Choice of JP Low Mass Operating System (LMOS™) JP Full Mass Operating System (FMOS™) or JP Variable Mass Operating System (VMOS™)
Trigger: JP Fire Control Package available in weights of 3.0 - 5.0 lbs.
Accessories: JP accessory pack including operator’s manual, one magazine, and more

ASF-20™ Rifle
Base Price: $2399

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ASF-20™ Pistol or SBR
Base Price: $2399

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ASF-20™ Lower Assembly
Base Price: $899

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