Not sure if this .22LR insert and barrel was a USGI or a LE issue. My guess it was a LE used set. It is the original DMPS/Colt type bolt/barrel type.
Upper: DPMS A1
.22 LR Bolt and barrel: Early DPMS/Colt
Handguards: Single Shield USGI
Magazine: Black Dog 35rd magazine.
Muzzle is threaded to the standard 11/28 AR-15 for flash hiders or a can.
Barrel and front sight base shows a beautiful brown patina and the barrel has some slight freckling on the left side.
Charging Handle Not included (Uses standard AR-15 CH).
I can drop this onto a standard PSA Lower and install a Charging handle at additional cost should the buyer desire a complete firearm,