So I’m pondering this SPR’ish build which I am current collecting parts for and I thought, why not do it in 6.5 Grendel? I am all about the improved external ballistics and increased range of the cartridge, but I really have no experience outside of 5.56 ARs.
Does anyone make a 18" SPR contour, rifle gas system, stainless barrel? I know it’s a tall order and I’ve had no luck finding one thus far. Seems the mid length gas is much more popular, but I really want a rifle length gas so I can do a Mk.12 Mod 0 type upper.
No not really, but I was hoping to maintain a rifle length gas system for the impulse and recoil benefits. The AA “SPR” is the most attractive at this point.
rubberneck, if all else fails having ADCO or someone turn a barrel may be my best option.
Yeah I was checking them and Sabre out. I am still thinking the AA barrel may be the winner. I’m in no rush though so I’ll just research more. Thanks for the help rubberneck and Shivan.
CSS who uses L-W barrelsmakes an 18" rifle length gas system. A little more $$ than the AA which uses Shaw barrels but is probably a little more accurate.
The guy who started CSS developed the 6.5G with Bill A and had a falling out so he doesn’t call his 6.5G.
Been thinking about building a 6.5 myself. Guess I’ll keep an eye on this thread and contribute when I have something to show.
Do have one question: Anyone think it would be worth the effort and cost to build this on a billet upper and lower, for the supposed strength gain, or just work with a quality upper/lower. Reason I ask is that I have one of Global Tactical/Denny’s Guns ion bonded upper and lower and I’m looking for something to do with them, other than sale them for a profit. It’ll either be a precision rifle around 6.5 or an SBR, suppressed beater gun.
That’s a good question, as to which all I can say is while designing the SPR Mk. 12 Crane didn’t seem to find any advantage to going with a billet upper.
IMO re: billet uppers - A billet is a bit stiffer which helps if you have a 24"-28" barrel and will aid in accuracy. At 18" I think it boils down to preference. A good CMT mil-spec upper should work just fine.
Also something to consider - A LOT of guys believe that Satern, CSS (L-W), Shilen, and AA (Shaw) over gas the rifle, which can be pretty hard on your bolt and brass (for reloaders). Many are going to the adjustable gas block or a adjustable gas tube (Fulton or MGI. )
One thing to note that the CSS gas block area is .875 while the other makers are either .750 or .936
I’m a Larue fan but Sun Devil makes good stuff. Also the Vltor forged is supposedly stiffer than a traditional billet. Speaking of Larue, do a search for his elk hunt/kill with his 6.5G. He killed a large bull. It certainly shows some of the 6.5 capabilities.
Funny you should mention LaRue. I was just looking at his site. One question about his billet upper; it’s an A3 (no M4 cut). My guess is that it is a non-issue for the 6.5G or am I wrong?
It’s actually ok to have a M4 barrel profile with a standard A3 receiver, but it’s NOT ok to have standard barrel (no M4 cuts) and a M4 receiver.
This is from Ar15barrels.
AA’s 6-8 week wait sucks.
And I haven’t been able to speak with Satern, even after leaving messages.
ETA: Satern-multiple month wait, probably too busy to take my order.
This is going in a VLTOR VIS which FYI has m4 cuts.
