American Rifleman - July 2014 - 46

RUGER SR-762

Developed to make AR-style rifles run cleaner and
cooler, piston-driven operating systems have found an
enthusiastic audience, and new entries have generally
received warm welcome. Most examples of these systems have lived up to expectations-sort of. The piston
system prevents gas, and associated fouling, from entering the action as in direct-impingement guns. Instead,
the gas interfaces with a piston that in turn drives a transfer rod to cycle the bolt. This does keep the bolt carrier
group much cleaner, but all the fouling does not just
disappear. Instead, it collects in the gas block/regulator
area, around and in front of the piston; components and
recessed areas that are, generally speaking, just as tricky
to clean as any bolt or star chamber. As to the claim of
running cooler, the same redirection of gas keeps the
action cooler, however, in my experience a hot barrel
will affect accuracy far more than a warm bolt.

Ruger's flip-up iron sights
are easy to use and offer a
reliable alternative to railmounted optics (above).
Disassembled, the SR-762
bears close resemblance to
other ARs, the notable differences being the bolt carrier
and the three-piece piston/
regulator assembly (inset, r.).

46 J

ULY

2014

AMERICANRIFLEMAN.ORG

So call me a doubting Thomas, but taking into consideration my military and civilian experiences with
direct-gas guns, I have never seen the advantage of a
piston system. Do they work? Absolutely. Are they better? Really, they are just different.
There was one more claim made by Ruger about its
piston, and that was that the two-stage design actually mitigated perceived recoil. When the SR-556 was
introduced I saw this as another feature of questionable consequence. How much perceived recoil does
a .223-chambered AR really produce? I had never
been "beat up" by my M4 or any similar rifle, nor did
I know anyone who had. It's not like these AR-15/M16
clones were producing the "kick" of, say, a .30-cal. rifle.
Speaking of .30-cals., such guns make a valid case for
recoil-mitigation features, especially semi-automatic
variants intended for use in extended shooting sessions.
Enter the SR-762.
With dimensions and weight marginally exceeding
those of .223-cal. ARs, Ruger's SR-762 was designed
to compete with such rifles in terms of handiness and
versatility, and yet outclass them in range and power
by utilizing the 7.62x51 mm NATO/.308 Win. chambering. From its introduction, I expressed my belief that
the platform would truly harness the potential of the
two-stage piston and deliver real advantage to users.
And, as I began an extensive round of testing that
encompassed two weeks and three states, my prediction was quickly borne out.
The piston Ruger designed has, in essence, two
heads with different diameters. The first, smaller head
interfaces directly with the gas regulator. Gas bled


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American Rifleman - July 2014

Table of Contents for the Digital Edition of American Rifleman - July 2014

Contents
American Rifleman - July 2014 - Cover1
American Rifleman - July 2014 - Cover2
American Rifleman - July 2014 - 1
American Rifleman - July 2014 - Contents
American Rifleman - July 2014 - 3
American Rifleman - July 2014 - 4
American Rifleman - July 2014 - 5
American Rifleman - July 2014 - 6
American Rifleman - July 2014 - 7
American Rifleman - July 2014 - 8
American Rifleman - July 2014 - 9
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American Rifleman - July 2014 - 11
American Rifleman - July 2014 - 12
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American Rifleman - July 2014 - 14
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American Rifleman - July 2014 - 16
American Rifleman - July 2014 - 17
American Rifleman - July 2014 - 18
American Rifleman - July 2014 - 19
American Rifleman - July 2014 - 20
American Rifleman - July 2014 - 21
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American Rifleman - July 2014 - 23
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American Rifleman - July 2014 - 25
American Rifleman - July 2014 - 26
American Rifleman - July 2014 - 27
American Rifleman - July 2014 - 28
American Rifleman - July 2014 - 29
American Rifleman - July 2014 - 30
American Rifleman - July 2014 - 31
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American Rifleman - July 2014 - 33
American Rifleman - July 2014 - 34
American Rifleman - July 2014 - 35
American Rifleman - July 2014 - 36
American Rifleman - July 2014 - 37
American Rifleman - July 2014 - 38
American Rifleman - July 2014 - 39
American Rifleman - July 2014 - 40
American Rifleman - July 2014 - 41
American Rifleman - July 2014 - 42
American Rifleman - July 2014 - 43
American Rifleman - July 2014 - 44
American Rifleman - July 2014 - 45
American Rifleman - July 2014 - 46
American Rifleman - July 2014 - 47
American Rifleman - July 2014 - 48
American Rifleman - July 2014 - 49
American Rifleman - July 2014 - 50
American Rifleman - July 2014 - 51
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American Rifleman - July 2014 - 53
American Rifleman - July 2014 - 54
American Rifleman - July 2014 - 55
American Rifleman - July 2014 - 56
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