The Firearms Blog During the Vietnam war Carroll Childers produced a box magazine feed shotgun that I think was based on the Remington 870. Childers also produced 50rd magazines for the M16 and the Childers-Dahlgren a tripod mounted blow-forward automatic shotgun with a rate of fire of 200rpm.
Since then, several other companies have produced shotguns with box-magazines. Box-magazine shotguns work, and offer numerous advantages.
The reluctance to accept these designs is endangering servicemen's lives.
Other nations have not been so conservative. The French Navy has adopted a box-fed design. Shotguns are, of course, a very useful weapon for boarding operations, such as searches for contraband. Russian forces make use of the Saiga designs, and South Africa has a long tradition of innovative designs
| All three FRAG-12 rounds utilize a standard 3-inch 12-gauge cartridge case and propellant, which fires a fin-stabilized 19mm warhead with a MIL-SPEC 1316-compliant fuze assembly. The projectile arms after firing once it reaches 3 meters from the muzzle, and detonates on impact with the target.|
There are three members of the FRAG-12 munition family: the FRAG-12 High Explosive (HE), FRAG-12 High Explosive Fragmenting Antipersonnel (HEFA, or HE-FA), and FRAG-12 High Explosive Armor-Piercing (HEAP, or HE-AP).
Initial testing has confirmed that the HE Blast round will produce about a 1- inch hole in cold-rolled steel plate with secondary spalling effects on the downrange side of the plate. The HE Fragmentation warhead containing 90 stainless steel ball bearings (BB shot?) is designed to have blast and fragmentation out to a 2-meter casualty radius. The HEAP incorporates a shaped charge and is claimed to be able to penetrate 4 inches of aluminum armor and more than ½ inch of steel.
All three rounds have a 200m effective range.
To Quote the Defense Review Article:-
To give the reader an idea of how just one FRAG-12 round can perform against a non-armored vehicle (standard car or truck/SUV), heres what Randy Aukamp of Action Manufacturing (FRAG-12 subcontractor) told Defense Review about a test they conducted with a single HE-FA anti-personnel round: