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|  MIL-R-3285
for Cleaning, Preserving and Packing,
ings and shall conform to Specification 57-
0-2 Sand or shot blasting shall not be used
for Rifle U. S., Cal .30, M1C and Ac-
in connection with the application of any
cessories
finish, unless specifically specified on the
(Copies of Army Ordnance Corps publications
drawings.
should be obtained from the procuring agency or as
directed by that agency. Both the title and identi-
fying number or symbol should he stipulated when
3.1.3 Marking.
requesting Copied)
3.1.3.1 Rifle. -- Unless otherwise specified,
BUREAU OF SUPPLIES AND ACCOUNTS PUB-
each rifle shall be marked in the position and
LICATION
of the type size specified on the drawings as
1
Navy Shipment Marking Handbook.
follows :
(Copies of the Navy Shipment Marking hand-
1 Model, name and number.
book may be obtained upon application to the Bureau
of Supplies and Accounts, Department of the Navy,
2. Manufacturer's name or identifica-
Washington 25, D. C., except that activities of the
tion
Armed Forces should make application to the Com
manding Officer, Naval Supply Center, Norfolk 11,
3. Certain components with piece marks
Va)
(see Spec 52-0-1).
2.3 Drawings. -- The following drawings
4.
and drawings listed thereon, of the issue in
5. Proof marks (see 4.7).
effect on date of invitation for bids, form a
part of this specification:
6. Army inspector's stamp.
7. Ordnance Corps final acceptance
U. S. Army ORDNANCE CORPS DRAWINGS
Stamp.
42-24--1A-Rifle, U. S., CaL .30, Ml, List
of Drawings and Specifications.
3.1.3.2 Components.--Whenever practica-
ble, components shall bear an identifying
42-24-4A-Rifle U. S., Cal. .30, M1C,
mark of the manufacturer and, in the case
List of Drawings and Specifications.
of components f furnished by a subcontractor,
(Copies of Army Ordnance Corps drawings should
an identifying mark of the subcontractor. A
be obtained from the procuring agency or as directed
component shall bear a piecemark only when
by that agency. Both the title and identifying numb-
er or symbol should be stipulated when requesting
called for on the drawing. If a special piece
copies)
mark drawing is furnished, only the items
listed thereon shall bear a piece mark.
3. REQUIREMENTS
3.1.4 Barrel.--The chamber and bore shall
3.1 Components and assemblies.
be smooth and free of scratches, pits, rings,
and other defects. The lands shall be sharp
3.1.1 General. -- Components and assem-
and well defined. Burrs and sharp edges shall
blies shall conform to the materials, dimen-
be removed from edge of chamber.
sions, tolerance limits, heat treatment, grade
of final finish, and protective finish specified
3.1.5 Burrel and receiver assembly.-The
on the drawings. All surfaces shall be smooth
uppermost keyway at muzzle end of barrel
and finished in accordance with Specification
shall be in alignment with the vertical center
52-0-1.
line of the receiver when barrel and receiver
are screwed together with a tight draw.
3.1.2 Protective finishes.--Protective fin-
ishes shall be in accordance with the draw-
3.1.6 Bedding of receive and trigger
housing.-The stock shall bear on its contact
1 Applicable only to Navy shipments
2
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