Armalite AR-7 Explorer Costa Mesa Patents Pending .22 LR Takedown Rifle, 16 in Barrel, Brown Marbled Stock
This early Costa Mesa-era Armalite AR-7 Explorer is marked "AR-7 EXPLORER / PATENTS PENDING" and features the classic takedown survival configuration. It pairs an aluminum-alloy receiver with a 16-inch aluminum-sleeved, steel-lined barrel and a distinctive brown marbled polymer stock designed to stow the barrel, receiver, and a magazine, while also providing flotation. Made in the USA during the Costa Mesa era (1959–1973), it stands out as a collectible, functional example of Armalite’s original Explorer series.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: There are signs of wear and handling, with scratches and blemishes visible.
What’s Included
- 1x 10-round steel AR-7 pattern detachable box magazine
The Costa Mesa, Patents Pending marking identifies this rifle as an early production AR-7 Explorer from Armalite’s original run. The brown marbled polymer stock houses stowage compartments for the barrel, receiver, and a magazine, and is designed to float, aligning with the AR-7’s survival-oriented design.
The 16-inch barrel uses an aluminum sleeve over a steel liner for durability and weight savings. A knurled barrel nut speeds takedown and reassembly, keeping the package compact for storage in the stock. The aluminum-alloy receiver further reduces weight while maintaining reliability.
Sights are straightforward and practical: a ramped, drift-adjustable front blade and an aperture rear adjustable for elevation. Controls include a two-position manual safety. The rifle operates via a straight blowback, semi-automatic action and feeds from a 10-round detachable magazine, offering a 10+1 capacity in .22 LR.
Ergonomics are set with a 14.9 length of pull, and the polymer stock includes a removable flexible buttcap to access the internal storage. This U.S.-made AR-7 Explorer represents the classic takedown survival rifle configuration from the Costa Mesa era and remains a desirable piece for AR-7 enthusiasts and collectors.