Replacement parts for New AIP Aluminum Blowback Housing System

– Replacement parts for AIP  Blowback Housing AIP015-M51-4 and AIP015-M51S-K
– Adjustable Blowback part for turning original Blowback to Light Low Blowback
– As always, upgrading GBB require necessary skill & technique, consult expertise if needed

– Major Color : Black
– Built Material : POM