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AR-15

IN PRODUCTION
Overview

The AR‑15 is a lightweight, modular, gas‑operated rifle originally conceived as a military assault weapon and later adapted into a highly popular semi‑automatic sporting platform. Designed around a direct‑impingement gas system and a rotating bolt, its core philosophy emphasizes ease of maintenance, parts interchangeability, and ergonomic ergonomics that allow rapid reconfiguration with interchangeable barrels, handguards, and stocks. While the military‑grade M16/M4 family serves combat roles, the civilian AR‑15 is marketed for hunting, competition, and personal defense. Its distinguishing features include a flat‑top receiver with a Picatinny rail, a detachable box magazine, and a short‑stroke gas system that can be swapped for piston kits. The platform’s reputation is built on reliability, customizability, and a vast aftermarket, making it a benchmark for modern rifles and a frequent subject of legislative debate.

Dimensions
Overall Length
840 mm (33.1 in) with stock extended (16 in barrel), 730 mm (28.7 in) with stock collapsed (14.5 in barrel)
Barrel Length
406 mm (16 in) standard, 368 mm (14.5 in) carbine, 508 mm (20 in) designated marksman, 254 mm (10 in) pistol‑length
Weight
3.2 kg (7.1 lb) empty (16 in barrel, without optics)
Mechanical
Action Type
Direct‑impingement gas system (original) or short‑stroke gas piston (aftermarket/variant), rotating bolt, semi‑automatic or select‑fire
Trigger Type
Single‑stage semi‑automatic trigger; military select‑fire models use a two‑stage fire selector with safe, semi, burst, and automatic modes
Sights Type
Standard: detachable flip‑up rear iron sight and fixed front post; many models equipped with Picatinny rail for optical, holographic, or night sights
Magazine Capacity
30 rounds standard, 10/20/40/60 round options, drum magazines up to 100 rounds

How does the AR-15 compare?

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