Buttstock- Original Colt 604 Fiberglass (Trap Door)

(1 review) Write a Review

Original US Military Buttstock with Trap Door. Used but in good condition.

1960's Vietnam era M16 Buttstocks had fixed rubber buttplates. (Here)

1970's & 1980's M16A1 models had a Trapdoor. (The Buttstock you are looking at now)

From the 1990's onward the M16A2 also used a Trapdoor, but used a longer buttstock

 Made in USA

Note: All three Butt stocks are interchangeable since they all use the same rifle length Buffer Tube (Receiver Extension).


  • 5
    A1 Trap Door Stock

    Posted by Paul Blew on 12th Aug 2019

    Under staffed? Customer service 2.5 stars. Ordered grade "A" trap door A1 stock. 5 of 5 stars, used of course, glad to have it.

Customers Also Viewed