M107A1 Assembly

Описание: 00:00 Intro

00:14 Legal Disclaimer
NOTE: Please read your Barrett product Operator’s Manual for complete instructions. DO NOT replace instructions with this brief video overview of how to work on your product. If instructions are not followed in their entirety, upon inspection of the product your warranty may be null and void.

00:20 Clean work area
Start with a clean work area with no ammunition present.
00:25 Major Components
Major components include: 1. Upper Receiver 2. Bolt carrier group 3. Lower Receiver 4. Magazine 5. Rear and midlock pins

00:34 Step 1
1. Extend the bipod legs on the lower receiver and place the lower receiver on a level surface

00:46 Step 2
2. The bolt carrier group is held in place under tension in the lower receiver by the midlock pin, which extends through a vent hole in the lower receiver and into the bolt carrier (Both the midlock pin and the rear lock pin, located in a retaining hole in the end of the lower receiver, have finger rings to aid in removal.)

00:50 Step 3
3. Standing above and to the rear of the lower receiver, grasp the charging handle with the right hand, and carefully pull back (FIGURE 7-A), against tension, while withdrawing the midlock pin from its retaining hole (FIGURE 7-B).

00:56 Step 4
4. The button on the midlock pin must be pressed for it to be removed.

00:59 Step 5
5. Allow the bolt carrier to come forward SLOWLY until there is no more spring tension and it rests in the lower receiver (FIGURE 7-C).

01:04 Step 6
6. Remove the rear lock pin from the receiver (FIGURE 7-D).

01:08 Step 7
7. Carefully pick up the upper receiver. The barrel will be nested inside for compact storage.

01:18 Step 8
8. Ensure the barrel is rotated so that the barrel extension and feed-ramp is correctly aligned (FIGURE 8-A).

01:25 Step 9
9. Slide the barrel forward until it is fully seated against the barrel stop (FIGURE 8-B).

01:31 Step 10
10. Slide the impact bumper into position on the large diameter of the barrel and against the barrel stop.

01:37 WARNING
WARNING: THE TENSION ON THE BARREL SPRINGS IS APPROXIMATELY 70 lbs (32 kg). SERIOUS INJURY COULD RESULT IF SPRINGS ARE SUDDENLY RELEASED.

01:47 Step 11
11. The barrel springs at the front of the upper receiver are held in by the barrel key and the front barrel bushing. The rear lock pin can be locked into the barrel key to help provide additional leverage and create a handhold.

01:56 Step 12
12. While maintaining the downward tilt of the upper receiver (to keep the barrel in place), firmly grasp the rear lock pin locked into the barrel key—not the springs—and pull it into place on the forward slot of the barrel (FIGURE 9).

02:02 Step 13
13. Work the barrel key until it is firmly seated in the barrel slot.

02:06 Step 14
14. Remove the rear lock pin from the barrel key. The upper receiver is now fully assembled.

02:11 Step 15
15. Rotate the upper receiver top rail to the 12 o’clock position then place the upper receiver over the lower receiver.

02:18 Step 16
16. Engage the notch in the front barrel bushing of the upper receiver with the front hinge pin of the lower receiver. To help couple the notch in the front barrel bushing and the front hinge pin of the lower receiver, tilt the upper receiver upwards to a 45-degree angle (FIGURE 10).

02:28 Step 17
17. While positioned directly behind the rifle, grasp the charging handle and pull rearward against mainspring tension so the bolt will clear the barrel extension when the upper receiver is lowered (FIGURE 11).

02:35 Step 18
18. Close the upper receiver onto the lower receiver. With the bolt retracted, the upper receiver should fi t into the lower receiver easily without being forced. If the upper does not fit on the lower, check front barrel bushing/hinge pin alignment.

02:39 Step 19
19. Release the charging handle SLOWLY until the bolt is fully closed (FIGURE 12).

02:51 Step 20
20. Place the midlock pin (shorter pin) through the midlock hole in front of the magazine well on bottom of the rifle until it is fully seated, locking the upper and lower receivers together.

03:02 Step 21
21. Insert the rear lock pin through the rear lock hole of the upper receiver to complete the mating of the receivers (FIGURE 13). (Both the midlock pin and the rear lock pin have a detent button that will need to be depressed and finger rings to aid in removal and installation.)

03:22 Step 22
22. Lift rifle, angle and insert magazine, seat mag tab on the magwell shelf, rock mag back, and listen for a click

03:35 WARNING
WARNING: THE RIFLE MUST NOT BE FIRED WITHOUT BOTH THE MIDLOCK AND REARLOCK PINS FIRMLY IN PLACE. SERIOUS INJURY OR DEATH COULD RESULT.

03:45 More Information