ArmaLite®s new AR-180B™ boasts the best features of the ArmaLite® .223 M15™ and the 1st Gen AR-180™ rifles. The lower on ArmaLite®'s new AR-180B™ is made of a high strength polymer, and features the trigger group and magazine well of the AR15®, so it uses standard AR15® type magazines and repair parts are readily available.
The upper is formed sheet metal like the 1st Gen AR-180™ an features the AR-180™ gas system to keep operating gasses outside the receiver. The 19.8" chrome moly barrel features an integral muzzle brake and ArmaLite®s exclusive adjustable front sight base.
The new AR-180B™'s upper and lower receiver groups are interchangeable with those of the 1st Gen AR-180™, so earlier models may now be repaired by replacing the upper or lower half.
NOTE: Replacements must go through BATF for certification when interchanging uppers and lower receivers with 1st Gen AR-180's.