The Geissele Reliability Enhancement Kit includes
the Geissele Reliability Enhanced Bolt Carrier Group (REBCG) and the
Geissele Super 42 Braided Wire Buffer Spring & Buffer in your
choice of H1, H2 or H3 configuration for 5.56mm AR-15 pattern rifles.
The Geissele REK is the culmination of a many years of extensive testing
and fine tuning to bring you the most reliable operating system upgrade
you can make to your carbine.
Manufactured in Geissele’s state-of-the-art manufacturing facility in
North Wales, PA. The REBCG is a 5.56mm full-mass, full-auto rated
M16/M4 bolt carrier group. The carrier is machined from mil-spec 8620
steel, and features a properly torqued and staked, chrome lined, gas
key. The cam pin is machined from an advanced medical steel typically
used to produce medical instrumentation known as H13, it is then coated
with Nanoweapon (Chrome-Nitride) for maximum corrosion and wear
resistance. The extended upper rails on the carrier also provide much
greater stability and dramatically increase feeding reliability. The
Carrier is coated with Nanoweapon for maxium corrosion and wear
resistance.
The Geissele Stressproof Bolt is made from Carpenter 158, however
this is not your typical material spec’d by the US Government. Since
Geissele wanted to take it to the next level, our engineers worked
directly with the Carpenter Steel metallurgists in Reading PA, to
produce a special heat of material known as Carpenter 158+. This
material is cleaner with less impurities, ultimately making it stronger
and more consistent. We did not stop there, we decided to forge the
bolt. Using the same process used to produce upper and lower receivers, a
forged bolt manipulates the grain structure of the metal and yields a
bolt capable of 5 times the life of a mil-spec bolt. Each bolt is then
rigorously inspected, high pressure tested, mag particle inspected and
coated with Nanoweapon for maximum corrosion and wear resistance.
Nanoweapon is a family of coatings similar to DSL (Durable Solid
Lubricant) that was developed by Picatinny Arsenal (US ARMY ARDEC), and
is only available exclusively from Geissele Automatics. Our engineers
worked for over 3 years with the research and development company that
worked with Picatinny to develop the coating in order to fine tune it
into what it is today, making it the pinnacle of coatings for firearm
components. No other coating on the market can provide the same level of
corrosion, wear, and abrasion resistance as Nanoweapon. The coating is
applied at low temperatures so it does not affect the metallurgy of the
part, and has a surface hardness equivalent of 82HRC. At that hardness,
it is harder than sand, easily rejecting carbon and making cleaning a
breeze, on top of allowing the firearm to operate normally with less
lubrication.
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