 |
|||
|
Page Title:
Upper receiver and barrel assembly group. |
|
||
| ||||||||||
|
|  MIL-S-63348A(AR)
The spring retainer assembly
3.3.2.8 Spring retainer assembly
In the receiver extension. It
shall be held securely when assembled
shall be easily assembled to and disassembled from the receiver
extension.
3.3.3 Upper receiver and barrel assembly group.
3.3.3.1 Ejection port cover. The ejection port cover shall
operate through its full range of travel under spring action without
binding. The cover shall be retained in the closed position by the
cover detent, and shall open under spring action when the bolt
carrier is moved rearward.
3.3.3.2 Charging handle. The
charging handle shall move freely
through its full range of travel in the upper receiver. When the
charging handle is placed in the forward position it shall engage
and lock securely in the upper receiver.
The barrel shall be free of cracks,
3.3.3.3 Barrel assembly.
seams, and other injurious effects and the bore and chamber shall be
free of pockets, rings, bulges and other deformations. The chromium
plating in the chamber and bore shall be free of nodules, flaking,
pits, stripping, anode burns, and evidence of etched base steel.
Burrs and sharp edges shall be removed from chamber edges, and bolt
locking lugs. Scratches or marks occurring in a chamber which
otherwise meets the surface roughness requirements, shall be
permitted, provided they do not cause marks on the cartridge case of
high-pressure test cartridge fired in the chamber.
*
3.3.3.3.1 Barrel assembly straightness. The barrel assembly
shall be straight to the extent that a cylindrical plug with a
diameter of .2173 + .0001 inches, and six (6) inches in length must
drop through the barrel bore of its own weight.
3.3.3.4 Gas tube assembly. The gas tube assembly and gas seal
shall be securely retained to the barrel by means of the barrel
collar with set screw and tapered pins. The gas tube assembly shall
be free of mutilations and positioned for proper alignment with the
bolt carrier key. The barrel collar shall be connected to the
barrel in accordance with the applicable drawings.
suppressor. The flash suppressor shall be
3.3.3.5 Flash
fastened secured to the barrel in accordance with applicable
drawings.
5
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals