• Win a RIX Storm S3 Thermal Imaging Scope!

    To enter, all you need to do is add an image of yourself at the range below!

    Join the contest

XM21 questions

The best book on them is Peter Senich’s ‘The Long-Range War’ (1996). It’s the full Vietnam era history of them as ordered via Project ENSURE 240. Here’s my XM21 replica on top, and mid-80s M21 replica on bottom. The www.m14forum.com has a bunch of detailed links on the XM21.

AD318A26-48D6-4EF9-8921-9212B8558790.jpeg

XM21 replica w/ 8-69 SAK NM barrel:
1723772D-9489-4089-BF31-19C6619CE02F.jpeg
 
Last edited:
Ok. Many old Army AMU guys like “Hook” Boutin who built them circa 1969-70 have since passed on, but if you have a specific question I’ll give it my best shot based on reference books, and if don’t know the answer, I’ll let you know.