SIONICS NP3 Coated Bolt Carrier Group

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SIONICS NP3 Coated Bolt Carrier Group

(7 customer reviews)

$22995

The SIONICS NP3 Coated Bolt Carrier Group: Better Looks, Better Performance

The SIONICS NP3 Coated Bolt Carrier Group is not only aesthetically pleasing, but it also performs better than other types of coatings. NP3 is a thin, impregnable coating that bonds to the host material, making it much more durable than other coatings. It is also more corrosion-resistant and heat-resistant, making it ideal for use in harsh environments.

In addition to its superior performance, the SIONICS NP3 Coated Bolt Carrier Group is also backed by a lifetime warranty. This means that you can be confident that your investment is protected.

If you are looking for a bolt carrier group that looks good and performs even better, then the SIONICS NP3 Coated Bolt Carrier Group is the perfect choice for you.

 

30 in stock

Estimated Ship Date August 14, 2024 - August 19, 2024
SKU: S-BCG-NP3 Categories: , Product ID: 5989

Description

The SIONICS NP3 Coated Bolt Carrier Group is a M16 style carrier machined to USGI (United States Government Issue) specifications. It includes a properly sized Mil-Spec gas key that is NP3 coated and heat treated. The gas key is secured to the carrier with OCKS (Optimized Carrier Key Screws) and properly staked to prevent it from backing out. Each carrier includes a hand-installed gasket formed by aviation Permatex to the mating surfaces between the gas key and the carrier. This helps to decrease the risk of under gassing.

SIONICS bolts are manufactured from Carpenter 158® steel. Each bolt is HP/MPI (High Pressure / Magnetic Particle) tested and inspected. These shot peened bolts come equipped with a Sprinco Heavy Duty Extractor Spring (5-Coil) and Black Spring Insert. In addition to the carrier, the bolt and cam pin have also been NP3 treated to enhance corrosion resistance and carbon buildup.

Here are some of the key features of the SIONICS M16 style carrier:

  • Machined to USGI specifications
  • NP3 coated gas key
  • OCKS screws
  • Staked gas key
  • Aviation Permatex gasket
  • Carpenter 158® steel bolt
  • HP/MPI tested bolt
  • Shot peened bolt
  • Sprinco Heavy Duty Extractor Spring – 5-Coil
  • Black Spring Insert
  • NP3 treated bolt and cam pin

DISCLAIMER: 

Prior to shipping, all SIONICS Bolt Carrier Groups are Test Fired for function. Because of the Test Firing Procedure, the Bolt Carrier Group could show handling marks consistent with these Quality Control Procedures.

Tooling Marks on SIONICS NP3 Coated Bolt Carrier Groups

Due to the inherent nature of NP3 coating, tooling marks may be present on the SIONICS NP3 Coated Bolt Carrier Groups. Tooling marks are cosmetic and have zero effect on function.

NP3 coating is a thin, impregnable coating that bonds to the host material. This makes it much less forgiving of tooling marks than other coatings, such as phosphate and nitride, which are thicker and darker.

Despite the presence of tooling marks, all SIONICS NP3 coated bolt carrier groups are backed by our lifetime warranty. This warranty covers any manufacturer defect that would affect function.

If you have any questions or concerns about tooling marks on your SIONICS NP3 coated bolt carrier group, please do not hesitate to contact us. We are here to help you get the most out of your firearm.

Bolt Carrier Groups
Key Screws OCKS (Optimized Carrier Key Screw)
Extractor Spring Sprinco 5-Coil Heavy Duty Extractor Spring
Bolt Material Carpenter 158® Steel
Gas Key Type Mil-Spec Gas Key
Weight 11.6 oz / 329 g
Inner Coating NP3
Outer Coating NP3

Key Features of the SIONICS Upper Receivers and Bolt Carrier Groups

SIONICS Warranty

The SIONICS Warranty

All SIONICS Weapon Systems Firearms, Receivers and Parts are manufactured for a Lifetime of Hard Use. The definition of a Warranty is a Guarantee from a manufacturer that a defective product will be repaired or replaced.

SIONICS Parts Warranty (Barrels, BCGs, LPKs etc.)

All SIONICS Weapon Systems Parts carry our Guarantee against defects in original materials and workmanship. If any SIONICS product shows evidence of such defects, we will fix, repair, or replace your product with that of an equal value product. SIONICS Weapon Systems does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer’s products. 

Warranty Processing Instructions

Step 1:

Call 520.396.3460 (Monday – Thursday 7:00 – 17:00 MST) and speak with one of our Excellent SIONICS staff to begin the troubleshooting process of your product. If deemed necessary you will then obtain an RMA# (Return Merchandise Authorization) to initiate the warranty claim. Outside of business hours please email us at warranty@sionicsweaponsystems.com

Step 2:

Once established that your item should return to SIONICS for further inspection, you will need to ship your defective/non-working item.

Return the item to our facility:
Make sure your assigned RMA# is clearly displayed on the outside of all return packages. This is necessary to match each package to the correct warranty claim. In addition please include a document listing your RMA#, Name, Phone Number as well as email address.

ATTN: Warranty Department
SIONICS Weapon Systems
5118 E. Pima Steet
Tucson, Arizona 85712

Step 3:

Our team here at SIONICS will work quickly to process your claim. Once your item is received, we will inspect and test within one business day. If the item is deemed defective, we will communicate back to you on your claim with the appropriate plan for repair or replacement.

 

7 reviews for SIONICS NP3 Coated Bolt Carrier Group

  1. Adam28 –

    Excellent BCG.

  2. Sam (verified owner) –

    These are very likely the best BCGs on the market. There are numerous others, including “enhanced” varieties, but many just end up solving non-existent problems on top of charging exorbitant prices .

  3. GAJD (verified owner) –

    Suggested by many as the best BCG available, I believe it. Machining is perfect, coating is flawless. Amazing how much more precise the bolt fitment is compared to more budget minded BCG’s out there. Definitely test fired before shipping which is a good thing. I have many BCG’s by many different manufacturer’s, and this is the best looking and feeling by far.

  4. Skyler (verified owner) –

    Amazed at the quality of this BCG.

  5. Chengxuan Wang (verified owner) –

    This is definitely one of, if not the best, BCG on the market. The silver NP3 coating and machining on all critical and outside surfaces are silk smooth, although the sample I have does have some visible/detectable tooling marks on non-critical surfaces, as the description has suggested. Hoping to purchase more whenever I can.

  6. Coach Pewpews (verified owner) –

    I went from a chrome microbest to this and from the first pull of the charging handle it was easy to see a difference in how much smoother the action of the rifle was going to be. Took it to the range and she hummed as expected.

    Lots of clean lines and the darker color is beautiful. Nicest looking BCG I have ever seen. I’ll be purchasing one for all my rifles.

  7. Ari (verified owner) –

    I knew this BCG would be good, but I did not expect to be this impressed! I own several BCGs from other expensive top-tier manufacturers, but this one stands on its own in terms of machining quality, part fitment, and coating application. The photograph they used on this page almost looks computer generated, but it really is that flawless in real life. Even the gas key staking looks like they precision machined 4 tiny scoops of steel off, as if to say it’s real stake job, but it truly is that perfect of a stake.

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The AR-15 bolt carrier group (AKA the BCG) is the part of the rifle or pistol that is responsible for performing semi-automatic fire when the trigger is pulled. It does this by first allowing the firing pin to strike the primer on the chambered round. Then grabs and ejects the spent shell casing from the fired round. It then re-cocks the hammer in the lower receiver for the next round which ends up grabbing a new round from the magazine and chambering it.

Carpenter No. 158 steel is the mil-spec steel used for fabricating the bolt itself. This type of steel provides the best performance and lifespan for the BCG. C158 is case- (or surface-) hardened. This means the exterior of the steel is made to be very hard, preventing cracking and surface wear. Inside, the steel is softer and more flexible, preventing deformation and stress fractures.

These are two types of testing we do on all of our Bolt Carrier Groups.

HPT or High Pressure Testing, is another test performed by firing a high-pressure cartridge through the BCG being tested. HPT is done first to expose any potential flaws in the bolt. Then MPI testing is done to find any flaws or potential flaws.

MPI or Magnetic Particle Inspected, is a testing method used to test for microscopic cracks or fissures created during the manufacturing process. To test for this, the BCG is placed inside a magnetic field and a liquid solution containing magnetic particles is then applied to the steel. The magnetic particles will stick to any cracks, fissures, or tiny imperfections that are on or just under the surface. If any cracks, fissures or imperfections are found that BCG is scrapped.

 

Since the gas key wears out before any other components, the key is made as a separate component and bolts to the body of the carrier. To ensure the key doesn’t get loose after being subjected to gas and recoil, SIONICS BCGs are hand staked utilizing a Michiguns MOMOAKS staking jig. Staking the key in the MOMOAKS creates a much more consistent stake, which enhances the longevity of the bond created by the fasteners.

Of course.

Phosphate coatings are porous and absorb oil and lubrication well by design. These are current Mil-Spec by the U.S. Military. When used in conjunction with quality external oils, a phosphate coating will protect the external of the BCG from corrosion. But, you must lubricate phosphate finishes regularly to give that protection.

NP3 is an Electroless Nickel coating with embedded TEFLON. The TEFLON is bonded to the particles of Nickel at the molecular level providing self lubrication throughout the entire coating. The Nickel in this finish provides corrosion and abrasion resistance. NP3 BCGs require less lubrication and they typically withstand heat and friction better than a standard phosphate or nitride-coated BCG. Because NP3 is chrome-like, it wipes off and cleans easily, often requiring no solvents or harsh chemicals.

Shot peening is a process used to make metals more stress-resistant. It is commonly used in engine pistons. However, it is also used to make the SIONICS bolt carrier groups more durable and long-lasting.

We choose to use the OCKS (Optimized Carrier Key Screws) because of their unique design features. There are twelve splines on the heads, giving depressions and projections for carrier key metal to stake/flow into and engage like gear teeth. This makes sure we’ve got the best possible retention of carrier key screws.

Sprinco AR-15 Extractor Springs are made from high quality Chrome Silicon wire stock that has been heat treated, stress relieved, and cryogenically processed to produce long lasting durability. 5-Coil springs provide a higher spring pressure than OEM springs for use in all AR-15 pattern rifles and performs well even if the rifle is dirty.

Here at SIONICS, we test fire EVERY BCG, upper receiver group, and firearm.

Our test firing process is simple:

  • BCGs get 5 rounds of M193 and another single round in a separate magazine to ensure function, ejection pattern, and lock-back.
  • All upper receiver groups and firearms get 7 rounds of M193 and another single round in a separate magazine to ensure function, ejection pattern, and lock-back.

Due to the inherent nature of NP3 Coating, tooling marks may be present on SIONICS NP3 Coated Bolt Carrier Groups. Tooling marks are COSMETIC and have ZERO effect on function.  Being that the NP3 Coating impregnates into the host material, it is much thinner and much less forgiving in hiding Tooling Marks. Other popular coatings such as Phosphate and Nitride are thicker and darker in appearance, allowing for tooling marks to be easily concealed.  Regardless of tooling marks present on SIONICS NP3 Bolt Carrier Groups, every SIONICS Bolt Carrier Group is backed by our Lifetime Warranty that covers any manufacturer defect that would affect function.


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