BRN16A1® 20” COMPLETE UPPER RECEIVERS – BRN M16A1 UPPER RECEIVER 20” RIFLE LENGTH, 1-12 TWIST, BLACK

Specifications

  • Cartridge: AKK_5.56 x 45
  • Color: Black
  • Contour: Lightweight
  • Style: Complete
  • Muzzle: 1/2-28
  • Finish: Black
  • Twist: 1-12
  • Length: 20''

The BRN-16A1® Complete Upper Receivers are back!

Styled after the issued U.S. M16A1, the BRN-16A1® has distinct features, found on late 1960s M16 rifles.

The muzzle of the BRN16A1®, is capped by the classic A1 flash hider, with ports around its radius, and is retained by a proper split washer. The flash hider is attached to a lightweight 20 inch barrel, found on AR-15 variants through the M16A1.

Available with a 1-12 or 1-7 twist. Select 1-12 if shooting 55gr bullets, and 1-7 if shooting 62gr or heavier. The front sight base is not F-marked, meaning the round, tapered front sight post is properly in line with the carry handle rear sight. The black triangle handguards closely emulate the original M16A1 handguards. A flat slip ring is at the end of the 5.56x45mm NATO barrel assembly.

Mounted to the upper is a proper ejection port cover, with a flat external "bump" (not just an off the shelf A2). The receiver is the proper M16A1 style, with a forward assist but no shell deflector. The rear sight is the standard A1 aperture, that can easily be adjusted with a cartridge or tool. Included bolt carrier group is the proper manganese phosphate mil-spec BCG, with chrome lined interior.

Key features of the BRN-16A1®:

  • M16A1 upper receiver without shell deflector
  • 20" 5.56x45mm NATO barrel with 1-12 or 1-7 twist & chrome bore & chamber
  • M16A1 ejection port cover
  • Tear drop forward assist
  • A1 rear sight assembly
  • A1 black polymer handguards with heatshields
  • Manganese phosphate mil-spec bolt carrier group with 9310 bolt
  • A1 flash hider
Description

Original price was: $849.99.Current price is: $637.49.

The BRN-16A1® Complete Upper Receivers are back!

Styled after the issued U.S. M16A1, the BRN-16A1® has distinct features, found on late 1960s M16 rifles.

The muzzle of the BRN16A1®, is capped by the classic A1 flash hider, with ports around its radius, and is retained by a proper split washer. The flash hider is attached to a lightweight 20 inch barrel, found on AR-15 variants through the M16A1.

Available with a 1-12 or 1-7 twist. Select 1-12 if shooting 55gr bullets, and 1-7 if shooting 62gr or heavier. The front sight base is not F-marked, meaning the round, tapered front sight post is properly in line with the carry handle rear sight. The black triangle handguards closely emulate the original M16A1 handguards. A flat slip ring is at the end of the 5.56x45mm NATO barrel assembly.

Mounted to the upper is a proper ejection port cover, with a flat external "bump" (not just an off the shelf A2). The receiver is the proper M16A1 style, with a forward assist but no shell deflector. The rear sight is the standard A1 aperture, that can easily be adjusted with a cartridge or tool. Included bolt carrier group is the proper manganese phosphate mil-spec BCG, with chrome lined interior.

Key features of the BRN-16A1®:

  • M16A1 upper receiver without shell deflector
  • 20" 5.56x45mm NATO barrel with 1-12 or 1-7 twist & chrome bore & chamber
  • M16A1 ejection port cover
  • Tear drop forward assist
  • A1 rear sight assembly
  • A1 black polymer handguards with heatshields
  • Manganese phosphate mil-spec bolt carrier group with 9310 bolt
  • A1 flash hider

Out of stock

SKU 430108531 Category

Description

The BRN-16A1® Complete Upper Receivers are back!

Styled after the issued U.S. M16A1, the BRN-16A1® has distinct features, found on late 1960s M16 rifles.

The muzzle of the BRN16A1®, is capped by the classic A1 flash hider, with ports around its radius, and is retained by a proper split washer. The flash hider is attached to a lightweight 20 inch barrel, found on AR-15 variants through the M16A1.

Available with a 1-12 or 1-7 twist. Select 1-12 if shooting 55gr bullets, and 1-7 if shooting 62gr or heavier. The front sight base is not F-marked, meaning the round, tapered front sight post is properly in line with the carry handle rear sight. The black triangle handguards closely emulate the original M16A1 handguards. A flat slip ring is at the end of the 5.56x45mm NATO barrel assembly.

Mounted to the upper is a proper ejection port cover, with a flat external "bump" (not just an off the shelf A2). The receiver is the proper M16A1 style, with a forward assist but no shell deflector. The rear sight is the standard A1 aperture, that can easily be adjusted with a cartridge or tool. Included bolt carrier group is the proper manganese phosphate mil-spec BCG, with chrome lined interior.

Key features of the BRN-16A1®:

  • M16A1 upper receiver without shell deflector
  • 20" 5.56x45mm NATO barrel with 1-12 or 1-7 twist & chrome bore & chamber
  • M16A1 ejection port cover
  • Tear drop forward assist
  • A1 rear sight assembly
  • A1 black polymer handguards with heatshields
  • Manganese phosphate mil-spec bolt carrier group with 9310 bolt
  • A1 flash hider

Additional information

Weight 5.88 lbs
Cartridge

AKK_5.56 x 45

Color

Black

Contour

Lightweight

Style

Complete

Muzzle

1/2-28

Finish

Black

Twist

1-12

Length

20''

Frequently Asked Questions

Are these brass cases and reloading components factory-new or once-fired? +

We stock both premium factory-new components and high-quality once-fired brass. Please check the specific product listing title and description carefully; once-fired brass is fully inspected, but we always recommend resizing and inspecting prior to priming and powder charging.

Will this case trimmer gauge or die set work with my progressive press setup? +

Our standard reloading dies and case length trimmer accessories utilize industry-standard threads (typically 7/8"-14) compatible with major single-stage, turret, and progressive presses like RCBS, Hornady, Lee Precision, and Dillon. Caliber-specific trim gauges must match your exact brass caliber.

Do you enforce shipping restrictions on powder, primers, or live ammunition? +

Yes. Non-hazardous reloading equipment (dies, case length trimmers, gauges, and unprimed brass) ships via standard ground carriers with no extra fees. Any orders containing smokeless powders or primers will incur standard federal HazMat handling fees and cannot be shipped via air transportation.

How can I track my shipment to ensure delivery safety? +

Precision reloading gear is valuable, so all orders are shipped with tracking enabled. As soon as your package is dispatched from our inventory warehouse, a tracking number will be emailed to you. You can monitor your shipment directly on our Track Order page using your unique Order ID.

Can I return precision measuring tools or die components if they don’t fit? +

We accept returns on unused, unaltered tools, case preparation equipment, and unopened component boxes within 30 days of item delivery. Due to safety and strict quality control on the reloading bench, we absolutely cannot accept returns on opened packs of primers, smokeless powder, or processed brass casings.