$0 Hazmat Fee On All Primer & Powder Orders - STOCK UP NOW!

$0 Hazmat Fee On All Primer & Powder Orders - STOCK UP NOW!

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BROWNELLSBRN-4 Stripped Upper Receiver Billet

BRN-4 Stripped Upper Receiver Billet
Brownells #
430104365
MFR #
BRN4UPPER
UPC
810110360228
$244.99

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Specifications
Cartridge:
223 Remington,5.56x45 NATO
Item Weight (lbs):
0.550
Item Height (Inches):
2.500
Item Length (Inches):
8.063
Item Width (Inches):
2.063
Color:
Black
Material:
Aluminum
Make Model Fit:
Brownells.BRN-4;Heckler & Koch.416;Heckler & Koch.MR556
Finish:
Anodized
Hand:
Right
Model Number:
BRN-4
Quantity:
1
Receiver Style:
Stripped
Restriction
Restricted Part:
Yes
Prop 65 restriction:
Warning: Cancer and Reproductive Harm-www.p65warnings.ca.gov
Can we ship this to you? (US only)
Description

Made In The U.S.A.

Products marked with the Stars and Stripes are proudly made in the U.S.A.

Many customers have asked us to show which products are made in America, and we’ve begun working with our vendors to identify them. This information, however, is not available for all items nor does it imply that foreign merchandise is of lesser quality. We will continue to gather this information to assist our customers in making informed buying decisions, and will keep our website current with the latest information.

Guaranteed. Forever.®

We make purchasing and returning products as simple as possible. If you buy a product from Brownells and decide you don’t need it, don’t want it, or just don’t like it, we’ll take it back any time… with a few exceptions

Exceptions include: 

  • Firearms
  • Ammunition
  • Modified 80% frames & receivers 
  • Gun powder
  • Primers
  • Liquids
  • Limited Quantity/Hazardous items
  • Products that are subject to pending or implemented restrictions due to Federal, State, or Local regulation/legislation

All other products are Guaranteed. Forever.® you can easily identify these products by the Guaranteed. Forever.® Icon.

Guaranteed. Forever.

Guaranteed. Forever.® return policy applies to the product’s original owner along with proof of purchase. Any items returned within 45 days of shipment are entitled to a refund. Any items returned after 45 days of shipment will be issued store credit in the form of a Brownells Gift Card. If a Brownells/Sinclair product was purchased through another retailer as a new product we will require proof of purchase to replace or refund.  (Refund will be issued as store credit in the form of a Brownells gift card.)  

Assemble your own BRN-4 Upper Receiver Assembly

Machined from billet aluminum the new BRN-4 Stripped Upper Receiver mates perfectly with the Brownells BRN-4 barrels, gas system components and bolt carrier group. Assemble a BRN-4 Upper Receiver Group from all new parts, no more relying on surplus, used components. Precision machining of the billet aluminum gives the appearance of a forged part, with finely mapped contours, leaving no unecessary flat surfaces or sharp edges.

Matte black hardcoat anodizing. Anodizing meets or exceeds mil-spec requirements for thickness. Laser engraved T-Marks and BRN-4 logo.

Fits standard AR-15 & M16 Lower Receivers. Accepts standard AR-15 & M16 ejection port covers and forward assists. Does not include Op Rod / Upper Receiver Bushing (sold seperately).

Requires BRN-4 Upper Receiver Bushing (078000700)

Compatible with early style, HK® 416 (A1-A3) barrels and barrel nuts.

PLEASE NOTE: This is a Billet Receiver, machined from a solid block of aluminum. As a result, it will show machine passes on some of the more complex geometry. These are intended to retain the overall exterior dimensions of a forged part. These surfaces are prepped by bead blasting to reduce the profile of any machining prior to anodizing.

Restricted Part
Please check with your state regulations for ownership of Restricted Parts. May require documentation.

Prop 65WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov

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