The new calibrated U.R.P tunable top ports have been designed for maximum adjustment making the Gen 4 line of brakes the flattest shooting brakes available hands down. By testing port size, location, and how the gas feeds into them, we have been able to make these tunable top ports capable of generating zero vertical movement.
“Magpul MAG559BLK PMAG GEN M3 10rd 223 Rem/5.56x45mm NATO Fit AR-15/M16/M4 Black Polymer” has been added to your cart. View cart
American Precision Arms G4F5830N Gen 4 Fat Bastard Self Timing Nitride 5/8″x24 Threads 3.30″ OAL 1.10″ Diameter 30 Cal
SKU: SA1343151
UPC: 810131791476
American Precision Arms G4F5830N Gen 4 Fat Bastard Self Timing Nitride 5/8″x24 Threads 3.30″ OAL 1.10″ Diameter 30 Cal
$221.49
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| Weight | 0.5 lbs |
|---|---|
| Dimensions | 3.8 × 1.3 × 1.3 in |
| Model | |
| Finish | |
| Thread Pattern | |
| Manufacturer | AMERICAN PRECISION ARMS |
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