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Barrel Lug (For All Series & Gauges On These Non-Takedown Models)Firearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520, 820, 77, 77A, 77B, 30Product #: 329650A$4.57
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Barrel, 20 Ga., 26", Full Choke, Blued, New Factory Original (2-3/4" Chamber)Firearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520, 520A, 620, 620AProduct #: 593590A$130.40Extra shipping cost of $5.00
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Barrel, 20 Ga., 28", Adj PolyChoke, Used Factory (2-3/4" Chamber; Markings Vary)Firearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520, 520A, 620, 620AProduct #: 1106640A$126.13Extra shipping cost of $5.00
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Barrel, 20 Ga., 28", Full Choke, Blued, New Factory Original (2-3/4" Chamber)Firearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520, 520A, 620, 620AProduct #: 593600A$130.40Extra shipping cost of $5.00
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Barrel, 20 Ga., 28", w/ Compensator & Adj Savage Super Choke (2-3/4" Chamber)Firearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520, 520A, 620, 620AProduct #: 593610A$138.93Extra shipping cost of $5.00
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Bead Sight, Gold, New (.130" Diameter, 3-56 Threads; Threads Up To Base)Firearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520, 620Product #: 2133810AE$10.06
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Bead Sight, White, New (.130" Diameter, 3-56 Threads; Threads Up To Base)Firearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520, 620Product #: 146560L$10.06
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Breech Block Assembly, 12 Ga., Used Factory OriginalFirearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520Product #: 1988030$81.81
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Breech Block Assembly, Complete, 12 Ga., Used Factory OriginalFirearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520Product #: 180480C$74.64
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Breech Block, 12 Ga.Firearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520Product #: 180450C$36.56
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Breech Bolt Block, 12 Ga.Firearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520, 520A, 620, 620AProduct #: 1052360A$11.89
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Breech Bolt Block, 20 Ga.Firearm Mfgr: SAVAGE / STEVENS / SPRINGFIELDFirearm Model: 520, 520A, 620, 620AProduct #: 1038400A$11.89

Parts List
NINot Illustrated
0Parts Layout w/ List
1 / 14Extractor
2Lifter
3Lifter Pawl
4Locking Bolt
5Slide
6Slide Lock
7Hammer Roll
8Mainspring Screw
9Hammer Roll Pin
10Breech Block
11Cartridge Stop Bushing Screw
12Cartridge Stop Bushing
13 / 28Cartridge Stop Screw
15Extractor Pin
16Extractor Plunger
17 / 18Extractor Spring
19Firing Pin
20Hammer Pin
21Lifter Pawl Pin
22Lifter Spring
23Magazine Follower
24Magazine Plug
25Magazine Spring
26Slide Lock Bridge Rivet, Short
27Ejector Screw
29Lifter Pawl Spring
30Trigger Guard Pin
31Trigger Guard Screw
32Firing Pin Stop Pin
33Lifter Pawl Plunger
34Magazine Nut
35Magazine Plug Screw
36Magazine Tube
37Operating Handle Bar Collar
38Forend
39Mainspring Pin
40Sear & Slide Lock Pin
41Slide Bridge
42Slide Bridge Pin, Long
43Slide Bridge Pin, Short
44Slide Lock Bridge
45Slide Lock Bridge Rivet, Long
46Slide Lock Release Button
47Slide Plunger
48Slide Plunger Pin
49Slide Plunger Spring
50Slide Lock Release Spring
51Breech Block Retaining Screw
52Lifter Screw
53Operating Handle Bar
54 / 55Slide Lock Release
57Sear Spring
58Slide Lock Spring
59Buttplate
60Buttplate Screw
61 / 74 / 85Ejector
62 / 76Trigger Guard
63 / 89Mainspring
64Safety
65 / 86Safety Plunger
66 / 78Trigger
67 / 79Trigger Spring
68 / 80Trigger Pin
69 / 81 / 90Cartridge Stop
70 / 82Stock Tang Screw
71 / 88Safety Plunger Spring
72 / 83Hammer
73 / 84Stock