SIG SAUER SIG 551-A1 Rifle - Manual (Page 94)

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10.2 SIG551-A1 Select Fire Parts List
Upper Receiver Group
111 Receiver assembly
112 Accessory rail
113 Accessory rail fastener
114 Bolt cover
115 Bolt cover Rivet
211 Barrel
212 Flash suppressor
213 Crush washer
214 Gas block
215 Roll pin 4x28mm
216 Stop pin
217 Compression spring
218 Roll pin 2x6mm
219 Gas valve
220 Gas tube
221 Operating rod
222 Recoil spring
223 Spring pin 2.5x12mm
224 Support washer
225 Dovetail block
311 Upper handguard
312 Lower handguard
411 Bolt head 412 Firing pin
413 Firing pin stud
414 Firing pin spring
415 Extractor
416 Extractor spring
417 Pin
418 Bolt carrier
419 Charging handle catch
420 Charging handle catch
pin
421 Charging handle catch
spring
422 Charging handle
Lower Receiver Group
1 Trigger casing, Auto,
Hinged
2 Pistol grip assembly
3 Mag catch assembly
5 Pistol grip bolt
6 Pistol grip nut
7 Stop nut
8 Bushing pressure point
screw
9 Trigger guard assembly
10 Slotted spring pin
11 Hinge pin
12 Trigger
13 Pressure point screw
14 Hammer auto
15 Hammer pivot pin
16 Hammer spring auto
17 Trigger bushing
18 Trigger pivot pin
19 Safety lever
20 Safety shaft auto
21 Safety detent spring
22 Slotted spring pin
23 Trigger spring
24 Sear
25 Take down plunger
spring
26 Front take down pin
27 Rear take down pin
28 Take down pin plunger
29 Bolt catch, mim
30 Bolt catch spring
31 Bolt catch pin 32 Stock latch pin
33 Buttstock assembly,
adj/fld
34 Hinge disc spring
35 Mag catch button
36 Mag catch spring
37 Sear spring
38 Stock latch
39 Pressure point spring
40 Latch spring
41 Sling attachment, single
42 Screw, single sling
attachment
43 Release bar stud
44 3-round burst facility
45 Retaining ring
46 Partition plate
47 Sear, auto assembly
48 Fire pawl assembly,
auto
49 Release bar assembly
50 Fire pawl assembly
spring
51 Retaining ring
12SIG541_SIG551_A1MiniManual_Rev1.indd 94 2/17/12 2:48 PM