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7 SLOTS
Stripped Upper
142
Complete Upper
87
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316
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241
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98
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54
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189
Muzzle Device Parts
BCG
Bolt Carrier Group
133
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71
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96
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62
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48
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204
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156
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73
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Tube + spring + buffer
112
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128
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14 SLOTS
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312
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68
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94
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217
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86
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52
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109
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144
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61
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