SHTF50 Single Shot .50 BMG Upper Assembly

50 BMG

SHTF50 Single Shot .50 BMG Upper — 22" or 29" (FFL Transfer Required)

The SHTF50 single shot upper turns any mil-spec AR-15 lower into a single-shot .50 BMG bolt action style rifle. Built for extreme long-range stops and precision, the SHTF50 upper is a robust, purpose-built assembly machined from high-strength chromoly steels and designed to use a standard AR-15 lower as the stock and ergonomics platform.

Important: following a BATFE determination (July 2018), SHTF50 upper assemblies are legally classified as firearm receivers. All SHTF50 orders must transfer through a licensed FFL dealer.

What’s Included

• Single shot SHTF50 upper assembly (select 22" or 29" barrel)

• One hammer and spring (to replace the AR-15 hammer and spring)

Note: AR-15 lower receiver is not included.

Key Specifications

• Caliber: .50 BMG

• Receiver Material: 4130 Chromoly steel (machined)

• Bolt Body: 4130 Chromoly tubing (machined)

• Bolt Head: 2-lug, machined from 4340 Chromoly steel

• Barrel Steel: 4140 Chromoly (button rifled)

• Barrel Length Options (available): 22 inch, 29 inch

• Rifling / Twist: 1:15 RH

• Muzzle Device: 8-port steel muzzle brake, threaded to muzzle

• Scope Mount: Aluminum with Picatinny rail mounted to receiver

• Feed Type: Single shot / bolt action style (uses AR-15 lower for stock and controls)

• Finish: (factory finish per production run)

Measured Performance (average of 3 shots; conditions noted)

• 22" Barrel — Muzzle Velocity: ~2385.9 fps

• 29" Barrel — Muzzle Velocity: ~2561.9 fps
  Test conditions: 90+°F temperature, 85% humidity, ammo = Summit/French Reloaded M33 Ball, chronograph at 20 ft.

Weight (upper assembly only)

• 22" Barrel: ~12.5 lbs

• 29" Barrel: ~15.5 lbs
  Weight does not include  AR-15 lower.

Notes

• FFL Transfer Required: Per BATFE determination, SHTF50 upper assemblies are treated as receivers and must transfer through a licensed Federal Firearms Licensee (FFL).

• Ammunition and cycling: Performance varies by ammunition and barrel length. Follow safe handling practices.

• Legal disclaimer: It is the buyer’s responsibility to ensure compliance with all applicable federal, state, and local laws. We will not ship to jurisdictions that prohibit these items.

Shipping & Processing

• Ships to U.S. addresses only and only to a licensed FFL dealer.

• Processing begins once we receive the dealer’s signed FFL referencing your invoice. Email FFL documents to the address provided at checkout or to the sales contact on your invoice.

• Please allow additional processing time for verification.