There are rarely any truly original ideas in the gun world, and today’s “pistol” ARs and AKs are not among them. Back in the 60s and 70s, companies were marketing the “Enforcer” M1, a pistol version of the WWII M1 Carbine. Rock Island has two in their upcoming auction, one made of military surplus parts by Iver Johnson and one made of new-production commercial parts by Universal.