HAC-7 
Variants
Holloway Arms - HAC-7 (.308 Win)
The HAC Model 7 came with a 20 in barrel. (shown on this page)
Holloway Arms - HAC-7 Carbine (.308 Win)
The Model 7 Carbine came with a 16 in barrel.
Holloway Arms - HAC-7 Match (.308 Win)
The Model 7 Match included sight-blocks, a 24 in barrel, and an adjustable trigger.
Holloway Arms - HAC-7 Sniper (.308 Win)
The Model 7 Sniper was designed for use with a scope only, it shipped with a 24 in barrel, an adjustable trigger, sight-blocks, and scope rings on request.
Serial Range
The bulk of this list has been moved offsite to HollowayArms.com as a registry.
00001 on: This is the default serial range of the production rifles, both left and right-hand models.
00001 through 00007: These seven receivers were reported (on an online forum) as having been stolen from the factory.
F0001: Unknown details.
A0001 through A0012: These twelve rifles were slated to be made select-fire but were made semi-auto (with appropriate ATF paperwork) and sold commercially.
CCCVIII-01: RH, the only Match model (HAC-7M) made, though unofficially, this was assembled by a gunsmith at the company for himself.
CM002: Believed to be a special serial for someone with initials C.M. whom was an investor in the company. The fate of CM001 is unknown.
SNIPE-01: The only Sniper model (HAC-7S) made.
TEST1 on: The serial numbers of the testing and development of the rifle.
References
GUN.fm.
