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Old March 30th, 2013, 14:38   #3
ybrik
 
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Join Date: Jun 2007
Location: Ontario, Canada
Delta ring is tight. The other types of RIS is secured in the delta ring (usually with a bracket passing over the gas tube. This mk18 is secured on the handguard cap.
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5.56x45mm + m27 = M249(SAW)
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