Just trying to figure out the difference between the HK 21e and the HK 21A1?\
google doesn't work when its not the question being asked, that is a 21 vs 21e discussion not a 21a1 vs 21e.
the main difference in the 21a1 and 21e is the shroud (21a1 shorter), feed mech and carrier as far as mixing parts and no forward assist on the 21a1
you can put a 21a1 carrier and feed mech in a 21e gun and vice versa, but you cannot mix/ 21e and 21a1 carriers and feed mech because the grove on the bottom of the carrier will not work with each.
21a1 moves the feed mech when the carrier is traveling forward. The 21e mech moves with rearward/forward- ie it pulls better since it takes half the energy.
Just what I was looking for.
Last edited by TaylorWSO; 07-02-2019 at 12:15 AM.
There is that 21a1 kit on the auction sight. You might like to look it over. A1 had the drop down feed mechanism. I noticed most of the parts were inscribed as 21a1 so I should think there are some finer differences as well. It appears the improved extractor and silent bolt closure were E1 upgrades. (I Have read reciever but have not seen any specs that would support that.
I have been trying to determine if the actual reciever is longer on the E1 or just the shroud assembly
Last edited by gulfstategaurd; 07-02-2019 at 01:11 AM.