[sixpikker]

If you want to go to the trouble and expense, probably the least hassle is to dismount current front sight, and substitute a Choate flash suppressor/front sight unit: Mini 14 (580 Series) Cage S.S. for barrel diameter of .625 – Choate Machine & Tool – Choate Store Home

Then add approprite rear bayo lug for M-7 (M-16) bayonet, which is by far the least expensive of the US bayonets, and almost identical to the other ones mentioned. Get a less expensive M-10 scabbard for the bayo.

DO shop around.

Military Bayonets: M-7

Military Bayonets: M-7 information and photos from Olive-Drab.com

olive-drab.com

In the unlikely, but possible event you ever mount an under-barrel strut to your Mini, the bayo lug will need to be removed in most cases.