Infinity® Firearms Traditional Frame Magazine Well
(Patent and Trademark pending)
Always wear eye protection when disassembling or re-assembling
a firearm. Even if you don't plan on working on a portion of
the firearm with a compressed spring, proper eyewear provides
an extra margin of safety in the event you unintentionally release
a compressed spring.
The Infinity Firearms® Magazine well available
for traditional single stack 1911 pattern guns demonstrates that
it is possible to build a better mousetrap.
This magazine well attaches to the firearm by means of a specially
machined mainspring housing. The lower front portion of the mainspring
housing is machined to allow a projection from the magazine well
to interlock around the mainspring housing retaining pin.
Two specially designed bolts "snug up" the mainspring housing
are fully captive, which provides a few benefits:
- The magazine well will remain in place even if these bolts
are loosened. The bolts serve to "snug up" the magazine well
so there is absolutely no possibility of movement, but do not
need to be tightened to hold the mag well in place.
- These bolts cannot be lost. They are captive, and can only be
removed after the magazine well has been removed from the gun.
- Appearance - the "snake eye" holes used for Allen wrench access
to these bolts are much smaller in diameter than the bolts.
- Insert a 1/16" Allen wrench into each of the snake eye holes,
and rotate at least 1/2 turn clockwise. These retaining
bolts have a narrow non-threaded section in the middle which bears
against the mainspring housing pin when the bolts are rotated
counterclockwise. The key here is that you are not "unscrewing"
two parts, but shifting an interlocking "key" away from the pin
upon which it bears.
- Drive the mainspring housing out of the gun, by inserting a
drift punch into the dimpled end of this pin.
- Remove the mainspring housing by pulling down.
- Since this magazine well overlaps the grips, the grips must
be installed before the magazine well.
- Assemble the gun including the specially machined mainspring
housing1, but do not
insert the mainspring housing pin.
- Make sure the two bolts are captive in the magazine well, and
adjusted so the mainspring housing retaining pin can move freely
without bringing on the bolts. (refer to the top left figure on
this page for an example of the proper orientation).
- Remove the mainspring retaining pin from the magazine well,
and place the magazine well on the gun.
- Insert the mainspring retaining pin, and use a 1/16" Allen wrench
in each of the "snake eye" holes to rotate the bolts counter
clockwise until they are snug.
1 - This write up assumes
that the reader is already familiar with the procedure for installing
the mainspring into the mainspring housing prior to assembly. If you
are simply removing and then re-installing an existing Infinity®
Traditional Single Stack Magazine Well, the mainspring housing will
already contain the mainspring. If you are installing a new mainspring
housing, and need to install the mainspring, please consult a reference
on 1911 gunsmithing, and re-read the note at the top about eye protection