Wow, according to the chart (thanks echo6 !) the Spikes Tactical is almost identical to the Colt 6920 – with one curious exception. The Spikes rifle has a one ounce heavier buffer… very interesting.
I can’t understand why Bushmaster didn’t respond; maybe it was when they were going through their “transition.” I’ve forgotten, who now owns Bushmaster?
The whole reason I got a Bushmaster was because of their excellent customer support. I called them to get some inexpensive part for a friend’s rifle and they treated me like I was buying their most expensive rifle!
Also, I’ve seen some charts list some properties of Bushmaster rifles incorrectly, for example some charts will say that Bushmaster doesn’t stake their carrier key –
well they did in my rifle! But alas, Bushmasters do NOT have the extended M4 type feed ramps, so in that sense the Spikes Tactical even has Bushmaster beat
(although a good argument could be made against the necessity of extended feed ramps in a semi-automatic firearm). Actually, the only accurate way to assess the quality of an M4 type rifle is how cool their roll mark is. Unlike some here (arachnophobes?) I actually like the Spikes rollmark which alone makes it a quality rifle!
Smith
"Among the many misdeeds of the British rule in India, history will look upon depriving a whole nation of its arms as the blackest." Mohandas Gandhi