This is not the same model as the preorder version on the XM177
The original 10 inch barrel Colt XM177 (colt model 609) was essentially a fielded prototype - and the first of many variants of the Colt CAR-15 SMG version to see limited issue to special operations.
The older model 607 had inherent problems which the newer model addressed. The Air Force version (model 610) ran concurrently with Army models feature for feature, but did not have a Forward Assist ("Slick Sides"). These would be the GAU-5 models many of these were used well into the 1990’s including desert storm
All metal receiver, buffer tube, flash hider.
Flash hider will accommodate some hopups.
J9 Mag compatible.
JG works v2 style metal gearbox.
295-310fps, with 20-25 rps.
suitable for upgrades of motor 480 long motors can be swapped. and these have been modified by Taidi to be 7.4 and 11.1 compatible