50 Beowulf 12.7×42 Build Kit

from: $1,525.00

OOOHH Man! Here the thumper is! This is a custom built 50 Beowulf AR-15 build kit!. This is a kit designed here at 1776 to be a powerful and attractive 50 Beowulf rifle. Boasting a velocity of 1,870 fps, and 2,330 ft lbs of energy,this round has some serious power.Choose from the different stock we have available,and different rail lengths to make this rifle your own. Wether your doing a whole new build and need an interesting twist,of just wanna have a caliber exchange for you favorite AR-15 platform,this upper kit never ceases to impress, destroy targets,And be a heck of a lot of  fun to thrash with!


SKU: N/A Category: Tags: , , Product ID: 2833


Upper specifications:

  • Forward assist
  • Black nitride bolt carrier group
  • Custom skeletonized gas block(subject to availability)
  • forged upper receiver
  • custom 12”or 15″ keymod rail (drop down menu for a longer length!)
  • upgraded compensator for recoil control (your gunna need it)

lower parts:

  • forged anodized 80 percent lower
  • mil-spec lower parts kit
  • upgraded trigger guard for glove use
  • upgraded grip with rubberization for optimum grip
  • custom alpha stock,or fixed stock
  • mil-spec buffer tube kit
  • 1x 50 beowulf magazine.



  • Finish Stainless
  • Material 416R Stainless Steel
  • Length 16 Inches
  • Caliber 12.7x42mm
  • Twist 1:20
  • Threads 49/64″-20
  • Contour Heavy
  • Chrome Lined No
  • Gas Block Diameter 0.875 Inches
  • Gas System Length Mid-Length
  • M-4 Feed Ramps- no
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