Safety Harbor SHTF50 50 BMG Upper for AR15 18 in barrel

Starting at: $1,450.00

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18" - Safety Harbor SHTF 50 BMG Single Shot Upper

Delivery Time
Click here for the current delivery time on Safety Harbor Uppers.  Place an order now with no money down, to hold one for you.  If you wait, it will be that much longer before you can get one. We do not expect to have any unspoken for uppers available for a year or more.

Payment Options
Payment does not need to be made at this time. Choose payment by cashier's check / money order at check out if you want to pay later.
If you prefer, you can pay the entire amount now with your credit card or with a mailed in payment, (choose preferred payment method at checkout) but it is not required.

$100 Deposit Required
When your order is about 30 days from being shipped we will require a $100 deposit to hold your place in line, followed by the Final Payment  4 weeks after the deposit.  We will notify you when those payments are due. You can pay the deposit by mailing in a check or money order, or by credit card using the "SHTF $100 Deposit" item listed at the top of the Safety Harbor uppers page. We will notify you when the deposit is due and will apply it to your order once paid. The deposit is non refundable.

The SHTF 50 Single Shot UpperConversion system that turns any standard AR15/M16 into a .50 Caliber Bolt Action rifle. The SHTF 50 is designed to fit any mil.spec AR15/M16 type lower. The SHTF50 also comes in 3 different barrel lengths: 18", 22", and 29". Note: AR-15/M16 lower NOT included.

What's included:

Single Shot SHTF50 upper receiver, complete and ready to install on your lower receiver.

One(1) heavy hammer and spring to replace the standard AR-15/M16 hammer and spring ( Caution - Do NOT use your AR-15 hammer if it has a notch cut in it, it will jam the bolt)

User's Manual - Click Here to download from the factory


Receiver: Machined from 4130 Chromemoly Steel

Muzzle Brake: 8 port steel. Threaded to muzzle.

Bolt Head: 2 lug, machined from 4340 Chromemoly Steel

Barrel: 4140 Chromemoly - 18, 22, and 29 inches long - 1-15 Twist 

Scope Mount: Aluminum with Picatinny rail profile mounted on the receiver.

Bolt Body: Machined from 4130 Chromemoly tubing.

 Muzzle Velocities:

18"Barrel: 2283.57

22"Barrel: 2385.89

29"Barrel: 2561.91
Average of 3 shots. Temperature was 90+F. Humidity was 85%. Ammo: Summit/French Reloaded M33 Ball  -Distance from muzzle to chronograph: 20 Feet


18"Barrel: 11.5 lbs

22"Barrel: 12.0 lbs

29"Barrel: 14.5 lbs   
Weight does not included weight of lower
Barrel Length varies from what is shown in the photograph based on the model you choose.

NO FFL is required for purchase, can ship directly to your door.

Flat Rate Shipping will be added automatically when you add the item to the shopping cart. Alaska and Hawaii shipping will be significantly higher ( About $35 more ) and the extra amount will be added after checkout.

Add to Cart:

  • Model: SHTF50 - 18 in Single Shot
  • 999 - Qty Available (If the Qty Available shown is 900 or more, that indicates this is a Special Order or Backordered item. We will notify you of the status after you have checked out.)
  • Manufactured by: Safety Harbor

Please Choose:

Flat Rate Shipping for Upper - Contact us for other methods

Shipping for Upper Only -

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