RED SPRING
Extra Power Buffer Spring. This was our first AR
buffer spring solution that we were tasked to design back in 2006 for a
Force Modernization Team to specifically address spring-related M4
carbine reliability function issues
for
operating challenges in the Eastern Asia Theatre. The design
loads of the Red spring are approximately 25% greater than the White spring
for one of the considered Load Constants in the spring design. Refer to
provided tuning
procedure reference documents prior to calling for
recommendations for use. The Red spring is commonly used in 9mm, 6.8
SPC, 6.5 Grendel, .450 BM, .450 SOCOM, .500 Beowulf, and Colt LE6920’s
specimen carbines, but certain specimen
guns
can deviate from the norm depending upon port values and the
power factor of your chosen ammunition loads. Color Coded RED.
NOTES: The RED spring is appropriate for moderately gassed .308
/ 6.5 CM / .260 Rem heavier caliber carbine platforms using AR-10 /
SR-25 Pattern (Armalite, LMT, LaRue, KA.C, etc. receiver extensions and
3.25” carbine buffers. NOT
for
use in “DPMS Pattern”.308 Carbines using standard 7" deep M4
extension tubes and short, 2.5” buffers. (Use our "ORANGE” Spring" for
that specific platform approach application.)
ORANGE SPRING
Extra Extra Power Buffer Spring. The Orange spring is much stouter than the Red spring.
The Orange buffer spring was originally engineered for the demands
presented by.308 / 6.5 CM / .260 Rem, etc., heavy BCG carbine
DPMS Pattern applications using standard 7" Depth M4
extension tubes and short 2.5" buffers (Including aftermarket "heavy
buffers") in robustly gassed 16” - 18” ML gas carbine platforms, but has
been proven to be a requirement
for tuning over gassed carbines of any equivalent heavy calibers
in AR-10 pattern tubes with 3.25" buffers or lesser calibers (5.56,
etc.). Color Coded ORANGE.
Don't clip coils from any of our other buffer springs in
order to yield a lighter spring load for DPMS pattern applications.
Doing so will result in an unknown spring load and might damage the gun.
NOTES: If your build is yielding a solid 1:30 to 2:00 O'clock
ejection trajectory, then start with an Orange spring and tune it with
the buffer weight. Empirical evidence has shown a heavier spring and
lighter buffer produces better
performance than a lighter spring and heavier buffer.
GREEN SPRING
Standard Power Rifle Length Buffer Spring.The Green
spring is for use in A1 / A2 fixed stock rifle length receiver
extensions (buffer tubes) with rifle length buffers. It is also
extremely popular in intermediate depth (7.75 “
deep) VLTOR A5 buffer tubes with 4” A5 buffers. The spring design
loads of the Green spring are those of a BRAND NEW mil-spec buffer
spring. While the Green spring is primarily for use with lesser calibers
such as .223, 5.56. 6.8 SPC,
6.5 Grendel, 7.62 X 39, etc. in A2 rifle length tubes, it may
sometimes be appropriate for use in long BBL (20”+) rifle length gas
BBL’s in heavier calibers such as .308 and 6.5 CM, .260 Rem, etc.. (May
not be effective for
unsuppressed
7.62 X 51) In the latter scenario, an H2 or H3 carbine buffer has
been used successfully in rifle length tubes with the Green spring.
Over gassed heavier caliber guns with rifle length tubes may be
addressed with our Red or Orange
carbine springs and standard length 3.25” carbine buffers along
with a spacer to yield the appropriate tube depth for the longer BCG’s.
Our line of enhanced spacers will be available in the 3rd Quarter of
2019. Color Coded GREEN