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BCM Enhanced Lower Parts Kit for your AR15 Lower Receiver
This
kit includes all the Mil-Spec quality components you have come to
expect from BCM, along with some fantastic upgrades to include;
" BCM PNT Trigger Assembly
" BCM Pistol Grip, Mod 3
" BCM Enhanced Trigger Guard
In
a commercial market flooded with imported and low quality Mil-Spec
imitations, you can trust that BCM parts are made in the USA and to the
highest standards. Please look at the information below.
BCM PNT Trigger Assembly (Polished Nickel Teflon)
BCM
quality, modern manufacturing processes, and aerospace coatings are
combined to ensure parts last a lifetime while performing far beyond
requirements established nearly six decades ago.
The BCM PNT
Trigger and PNT Hammer are a precision machined Mil-Spec AISI8620
investment casting per the USGI TDP (Mil-Spec) for M16/M4 family of
weapons. (not to be confused with MIM parts that are very common in the
commercial market). 156/157 holes are honed to assist in perfect
alignment and a smooth trigger pull.
After that, the BCM PNT
Trigger and PNT Hammer then goes through a 3 step heat treat and case
hardening process for optimal grain structure alignment, yielding a
stronger and more wear resistance product..
Polished
The sear engagement surfaces are ground, but then hand
polished for an increased smoothness up to 300% beyond the Mil-Spec.
Nickel
An
electroless nickel finish is applied for a smoother trigger pull with
less "grit and reduced felt creep". Nickel also provides a long
lasting finish that will not corrode, rust, or discolor due to
oxidation.
Teflon
Teflon
particles are embedded in the nickel, further reducing the friction of
the interface and ensuring a long lasting coating. This is done on both
the BCM PNT Trigger and Hammer in order to provide the maximum benefit
allowed by the nickel coating, by augmenting the low friction and
corrosion resistance.
This assembly includes our impact resistant
trigger and hammer pins. They are centerless ground to a fine finish
and superior tolerances to ensure compatibility with all MIL SPEC lower
receivers built per the USGI TDP.
The BCM Disconnector is stamped
from a 1070 material and fine blanked for cleaner edges, double disc
ground to precise size. All hammer engagement surfaces are also ground
for a super clean reset.
The processes and tolerances are matched in the BCM PNT Trigger Assembly to create a system better than the sum of its parts.
Bolt Catch and Safety Selector
The
BCM Bolt Catch and Safety Selector are a Mil-Spec AISI8620 investment
casting per the USGI TDP for M16/M4 family of weapons. (not to be
confused with MIM parts that are very common in the commercial market)
The
Safety Selector is center-less ground. The Selector and Bolt Catch are
machined to the Mil-Spec , then goes through a 3 step heat treat and
case hardening process for optimal grain structure and wear resistance.
Has a phosphate finish for corrosion resistance.
BCM Magazine Catch
The
BCM Magazine Catch Assembly (plate and the post) is precision machined
Mil-Spec AISI8620 per the USGI TDP for M16/M4 family of weapons. (not to
be confused with MIM parts that are very common in the commercial
market) and a hardened alloy steel shaft.
The BCM Magazine Catch
is machined to the Mil-Spec , then goes through a 3 step heat treat and
case hardening process for optimal grain structure and wear resistance.
The shaft is hardened, centerless ground, and precision threaded. Parts
are assembled and staked per the USGI TDP and given a phosphate finish
for corrosion resistance.
BCM Rear Takedown Pin and Front Pivot Pin
BCM
Rear Takedown Pins and Front Pivot Pins are made from AISI8620 bar
stock and machined per the USGI TDP for M16/M4 family of weapons. Our
takedown pins are given a 3 step heat treat processes and the diameters
are ground to final size prior to a corrosion resistant phosphate
finish.
BCM Detents and Springs
Takedown
detents include a cadmium chromate coating to resist corrosion and
prevent them seizing in the small holes of the lower receiver while the
Buffer retainer and Bolt Stop Plunger are made from hardened alloy steel
for wear resistance and finished with a phosphate coating to prevent
corrosion. The Springs are 17-7PH Stainless Steel to prevent corrosion
and retain adequate tension for a lifetime of service.
This BCM Enhanced Lower Parts Kit includes:
1. BCM PNT Hammer
2. Hammer Spring
3. BCM PNT Trigger
4. Trigger Spring
5. Hammer/Trigger Pins
6. Disconnector
7. Disconnector Spring
8. Bolt Catch
9. Bolt Catch Plunger
10. Bolt Catch Spring
11. Bolt Stop Pin
12. Rear Pivot Pin
13. Buffer Retainer
14. Buffer Retainer Spring
15. Magazine Catch Button
16. Magazine Catch Spring
17. Magazine Catch
18. Rear Take Down Pin
19. Selector (Safety)
20. Selector Detent
21. Selector Detent Spring
22. BCM Enhanced Trigger Guard
23. BCM Trigger Guard Pin
24. BCM Trigger Guard Screw
25. BCM Pistol Grip Mod 3, Grip Screw, Locking Washer
26. Take Down/ Pivot Pin Detent
27. Take Down/ Pivot Pin Detent Spring
⚠
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov.
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