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| Experienced
AR-15 shooters have probably had the misfortune of their
trigger/hammer pins "walking" out the side of
the lower receiver. This generally happens because the
hammer/trigger pins are only held in place by spring tension
bearing against indentations cut around the circumference
of the hammer and trigger pins. Once the spring jumps
the indentation, the pin is free to move out of position
which can cause serious safety and/or functionality problems.
Another problem which occurs, especially on high volume
guns, is hammer and/or trigger pin fracture. The stress
fracture normally happens at the weakest point in the
pins, the areas where the indentations are cut around
the circumference of the pins. A fractured pin also has
the potential of creating serious safety and/or functionality
problems. |
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| There
have been multiple attempted solutions to these problems
over the years. Pins with clips outside the receiver and
pins which locked to each other are a couple of popular
solution attempts. Clips on the ends of the pins, outside
the receiver, are a bad idea. As soon as the clips get
brushed off the pin is free to walk out of the receiver.
Locking the pins together is a poor idea because it does
not allow the pins to rotate, causing them to wear unevenly. |
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| Dave
Lauck's design offers a better solution to the problem.
Durable cross pins are used without any cuts around their
circumference. This eliminates weak points in the pins.
The pins are held captive in their proper positions by
using dome head threaded cap screws at the end of each
pin. The caps are drawn tight against the center pin,
not the receiver. This keeps the pins positively in place,
yet allows them to rotate and avoids uneven wear problems. |
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| These
captive, antiwalk trigger pins are highly recommended
for anyone in quest of total mechanical reliability in
their AR-15 style firearm. |
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| These
pins come in sets of two, complete with Allen socket dome
head screws. They are available to fit lower receivers
with large and small hammer/trigger pin holes. If you
are unsure if your receiver has large or small pin holes,
measure your existing pins with a caliper. Pins that measure
approximately 0.169" in O.D. are large pins. Pins
that measure approximately 0.154" in O.D. are small
pins. Please specify what you will need. Cost is the same
for either size. |
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$52
per set
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