Is that silver cylinder a Gas Block?
ALG handguard?
^^^I found a detent spring on the floor that flew away months ago. Can’t let it go to waste, gotta build another.
.....but A1's are the real shit....[/ATTACH]
I have the Colt SP1 as original and don't plan to change. It is identical (other than select fire) as the originals the USAF started issuing back when I was in. No forward assist.Yes.
The elegant full butt-stock and triangular Model 603 hand guards are just classic beauty.
One step more retro is to go without the foreword assist.