tube. The forearm buffer must be toward
the receiver. However, both the spring and
the buffer, individually, can be installed in
either direction.
With the gun in a horizontal position,
install the entire barrel/forearm assembly
onto the receiver by sliding the forearm
(with buffer and spring inside) over the
magazine tube (See Figure 4). Position the
gun vertically (barrel up), then slide the
barrel/forearm assembly fully rearward,
making sure that the barrel extension rails
are fully seated in the receiver tracks. The
barrel extension may hang up slightly
where the extension contacts the face of
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