$299.99

9 in stock (can be backordered)

The Rankin Industries SP4 Coated Bolt Carrier Group is featured online at Western Sport. This factory-new item delivers exceptional reliability and performance. Furthermore, we offer a price match guarantee and fast nationwide shipping.

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Product Description

Rankin Industries SP4 Coated Bolt Carrier Group Online | Western Sport — Rankin Dealer

The Rankin Industries SP4 Coated Bolt Carrier Group shows a clear focus on quality and innovation. This premium hardware is built for tactical professionals and shooting enthusiasts alike. Consequently, it keeps your platform highly reliable in demanding situations. Because we are an authorized dealer, Western Sport sells only factory-new gear. Therefore, you always receive the exact high performance that you expect from this tier-one brand.


Technical Specifications

Feature Details
Model / Name Rankin Industries SP4 Coated Bolt Carrier Group
SKU / MPN RI-SP4-BCG-5.56-M16
Product Category Tactical Components & Gear

Why Shop from Western Sport?

  • Authorized Dealer: Every product is factory-new and fully covered by the manufacturer’s original warranty. Therefore, you buy the real article instead of a questionable open-box item.
  • Ships Nationwide: We are proudly based in Texas and ship directly to all 50 states. Additionally, we coordinate secure FFL transfers and handle SOT/NFA shipping.
  • Price Match Guarantee: If you find an identical in-stock item at a competing dealer like Euro Optic, Rainier Arms, or Primary Arms, please let us know. Consequently, we will match any authorized dealer’s price.
  • Expert Support: Our team shoots what we sell. Furthermore, you can contact us for real-world advice before you check out.

Frequently Asked Questions

Is Western Sport an authorized dealer?

Yes, we are. Western Sport is a licensed FFL dealer and trusted retailer. Every item ships brand-new with a full manufacturer warranty. Furthermore, we do not sell fake or used goods.

Do you ship nationwide?

Yes, we ship to all 50 states. Firearms must ship to your local FFL dealer. However, most parts ship directly to your home door. Also, NFA items ship to your local Class III dealer.

What is your price match policy?

If you find an identical in-stock item at a competing dealer like Primary Arms or Grab a Gun, contact us. Consequently, we will match or beat their current price for you.

Is this item covered under warranty?

Yes, absolutely. Because we are an authorized dealer, your purchase is fully covered under the original factory warranty framework. Therefore, you can buy with total confidence.

Rankin Industries Complete Mil-Spec M-16 Bolt Carrier with Bolt Assembly HPT/MPI Tested:

  • Mil-Spec BCG Machined from 8620 Aircraft Quality Steel and heat treated to 60 RC
  • Mil-Spec Chrome Lined Carrier Interior
  • Mil- Spec Chrome Lined Gas Key from 4140 Steel
  • Grade 8 Screws and torqued to 58 inch pounds per Mil Spec.
  • Properly Staked.
  • 9310 Steel Bolt w/ Spring and Ejector, Heat Treated, Shot Peened, MPI
  • 4140 Billet Extractor w/ Spring and viton O-ring, Heat Treated, Shot Peened
  • Mil-Spec Firing Pin
  • Mil-Spec Cam Pin
  • Full Auto Carrier is Backward compatible with all semi-auto rifles
  • Full Auto M-16 5.56 BCG Weight – 11.40 oz.
  • SP4 is a Thin Film that has a thickness between 2 and 3 microns
  • Hardness is an amazing 3000 on the Vickers scale
  • Friction Coefficient is an incredible  .02
  • SP4 is also the most flexible coating on the market.
  • SP4 is #1 in Hardness; #1 in Low Coefficient of Friction; #1 in Flexibility and Elasticity
Rankin Industries bolt carrier groups are made in the U.S.A. and backed by a lifetime warranty. Should your BCG fail to function properly, Rankin Industries will get you taken care of.

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