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Bought this bad boy to pin and weld on a barrel to legal length however, I miss measured the barrel and thought it would work; the adaptor will not bring it to that necessary length, as described in the info from FCD, you'll need at least a 13.9" barrel.
From Forward Controls Designs:
6315KM-L (long) is the Dead Air sound suppressor Keymo mount of our 6315 (1/2x28) flash suppressor designed for 13.9" barrels, compatible with .223 Dead Air sound suppressors with Keymo interface. 6315KM-L is 2.7" long, and can bring a 13.9" barrel to non-NFA length (16.1", assuming 0.5" of threading on the barrel)
Has been used on other .223 barrels, but never used on a suppressor. QPQ coating is pristine.
I do not have the original FCD packaging though.
$85.00 shipped USPS first class
From Forward Controls Designs:
6315KM-L (long) is the Dead Air sound suppressor Keymo mount of our 6315 (1/2x28) flash suppressor designed for 13.9" barrels, compatible with .223 Dead Air sound suppressors with Keymo interface. 6315KM-L is 2.7" long, and can bring a 13.9" barrel to non-NFA length (16.1", assuming 0.5" of threading on the barrel)
- Machined in 4140, heat treated and QPQ coated.
- Length: 2.7" 6315KM Long is designed for 13.9" barrels.
- Weight: 3.87oz
- Drilled for pinning
- Recommended torque: 25ft lbs +/- 5
Has been used on other .223 barrels, but never used on a suppressor. QPQ coating is pristine.
I do not have the original FCD packaging though.
$85.00 shipped USPS first class