Which FN mag. for RRA Lar-308 ?

[Wayne S]

Does anyone which FN magazine will work in an RRA 308 ? The RRA "plastic" ?? require a shorter OAL than Armalite or M1A mags. do. I read here a while back someone buying FN ?? mags for his RRA ?? Hoping someone knows ??

[Jack Stanley]

Wayne I think they use the metric magazines . Someone showed me the difference between the metric and the "inch" but I forgot what it was , something to do with latching I believe .

Jack

[JSnover]

192086If it takes FN-FAL mags, inch-patterns have a machined locking lug brazed to the magazine. Metric magazine tabs are just a lip punched outward through the front wall of the mag.
Inch on the left, metric on the right.