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ARMS INDUSTRIES AR/M16 MPI BOLT CARRIER GROUP 223/5.56

ARMS INDUSTRIES AR/M16 MPI BOLT CARRIER GROUP 223/5.56

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ARMS INDUSTRIES AR/M16 MPI BOLT CARRIER GROUP 223/5.56

Arms Industries popular AR/M16 223 / 5.56 FULL AUTO Complete Bolt Carrier Groups now with UCT's exclusive Nickel Boron EXO Technology Coating.

Availability: IN STOCK

Warning: Last items in stock!

AI9310

Our Price:  $155.00

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Description

Features 9310 Bolt Material; 8620 carrier and gas key; Properly staked Investment cast gas key hardened to USGI specifications and fastened with Hardened Grade 8 Fasteners; Shot peened MPI (Magnetic Particle Inspected) Bolt. Extractor insert installed. Proudly made in the USA

UCT’S EXCLUSIVE EXO TECHNOLOGY

EXO Technology creates a competitive advantage for all kinds of components, because treated parts run dramatically longer and more accurately with less maintenance. Further, EXO greatly enhances heat dissipation, so treated products run far cooler than non-treated parts.

The EXO process is permanent, lasting for the entire lifespan of treated parts. A patented, nodular nickel-boron (NiB) surface treatment, EXO nucleates on the surface atoms of metals, becoming part of the metal rather than merely applied to the outside. In addition, the treated surface becomes harder than the substrate itself, eliminating the cost, weight and degradation problems of conventional hardened metals.

EXO Technology is featured in firearms, weapons and support systems used by the U.S. military and law enforcement and security agencies. EXO Technology is appropriate for virtually any application where reduced friction, extended service life, enhanced performance and lower maintenance are desirable.

How Does UCT’s EXO Coating Compare to Conventional Coatings?

UCT's EXO coating looks different from other Nickel Boron coatings. It has more of a dull grey, marbled appearance. UCT technology applies a nickel-boron (Ni-B) family of coatings to metal alloy surfaces. The properties of these coatings make them suitable for applications requiring high wear resistance, friction reduction, uniformity of dimensions on complex geometry, strong adhesion to substrates, and inherent solid lubrication. Corrosion inhibition is an added feature. Benefits include increased life cycle and decreased maintenance costs.

ASSEMBLY:

The standards for assembly of our Bolt Carrier Groups are much higher than most. Before assembling the gas key to the carrier, permatex NO.3D aviation is applied to form-a-gasket around the gas hole (per MIL-SPEC). Then Grade-8 hardware is used to attach the gas key, followed by properly staking per spec. When installing the extractor to the bolt, a crane-o-ring is inserted with the spring to insure proper ejection. Then high temperature grease is applied to the gas rings before inserting the bolt into the carrier, which allows for much smoother operation. These BCGs are inspected to the highest of standards, to insure a high quality product that is 100% reliable.

PROUDLY MADE IN THE USA!

CARRIER:

  • M16 style (Auto)
  • Machined from 8620 tool steel
  • Heat treated to military specifications 

BOLT:

  • Machined from 9310 tool steel
  • Heat treated to military specifications
  • Shot Peened
  • Ground to meet military required tolerances
  • MPI (Mag Particle Inspected) 

GAS KEY

  • Machined from 4140
  • Heat treated to military specifications 

EXTRACTOR:

  • Machined from 4140
  • Heat treated to military specifications
  • Shot peened 

FIRING PIN:

  • Machined from 8640 tool steel
  • Heat treated to military specifications
  • Ground to meet military required tolerances
  • Coated with .0002”-.0003” of hard chrome per MIL-STD-171 1.2.2.2

 CAM PIN:

  • Machined from 4340
  • Quench and temper heat treat
  • Ground to meet military required tolerances

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