Colt m16A2 upper build

[RCS]

Some old photos from years ago. The breech and bolt are 4140 steel heat treated to 50 Rockwell C scale. I chambered a 1903 barrel in 30 M1 carbine cal and used an M16 extractor, m1 carbine trigger housing parts and made the rest. Have some trouble with soft lead nose bullets feeding, ball works really well

Very simple action, just a bolt and bolt carrier moving back and forth, barrel moves to the rear a short distance while the bolt is rotated out of the barrel collar. Ejection is not violent, empty cases are ejected almost two feet. Wish that I had not welded the muzzle brake to the BAR sight cover

This was an interesting mechanism to build and shoot and have since made some improvements. Important to stamp information as to who made this, serial number and caliber. It is about the same size as the French MAT 49