High-performance AR-15 buffer spring available in multiple power options. Built for reliability and longevity.
Price range: $20.00 through $22.00
Every rifle that we build for military/LE demo use, research and development, test and evaluation, or the occasional charity gun all use action springs from our friends at Tactical Springs LLC. These buffer springs are constructed from Chrome Silicon wirestock certified to ISO 9001:2008 quality standards to withstand extreme heat and high cyclic rates. This cert ensures a minimum uniformity in the parent material of 95% which translates to repeatable consistency in performance & function. For reference, certified valve quality Chrome Silicon wire is used in very high stress racing engine applications (NASCAR, Formula One, etc.) as it’s not uncommon for valve springs to see 15,000,000 compression cycles in one race. It is this extraordinary capability that makes Chrome Silicon wire the obvious choice for action springs vs. the music wire or 17-7 PH stainless steel used in OEM springs and by most aftermarket competitors. In addition, these buffer springs are heat treated, stress relieved, and shot peened, all in separate post winding processes. Finally, each spring is treated with a proprietary, deep-penetrating, re-micronized Molybdenum-Disulfide (MoS2) formulation that eliminates 90% of all mechanical wear on the spring. This combination of premium material & engineered processes results in a loss of no more than 5% spring efficiency. The result: these buffer springs have a minimum rated duty cycle well in excess of 1,500,000 compressions. With correct selection you will have a buffer spring that works reliably, consistently, and virtually indefinitely in all properly built and maintained AR carbines.
YELLOW Spring, Reduced Power, Carbine Length: Tactical Springs collaborated with two prominent commercial ammunition manufacturers, and two prominent gunsmiths, to arrive at the design for this spring. It’s approximately 20% lighter than the white spring and was the consensus choice out of 4 different evaluation samples provided to all parties. In the final evaluation, if a gun needed a lighter spring, the gas port should be enlarged for overall reliability. The yellow spring is also appropriate for use with low power SRTA or SIMS rounds for training operations. Color coded YELLOW.
WHITE Spring, Standard Power, Carbine Length: equivalent spring load to a brand-new mil-spec M4 carbine spring. This spring will perform reliably in any properly configured and maintained 5.56 carbine if you wish to maintain the performance of a “fresh”, mil-spec load spring, without concern for replacement. Color coded WHITE.
RED/WHITE Spring, Intermediate Power, Carbine Length: the aka Hot White spring came to life as an accident that turned out to be a valuable solution for certain platforms. Set perfectly between the design loads of the white and blue springs, the evolution of the Hot White makes it well suited for tuning purposes. If you are among those who are advocates of using Mil-Spec carbine springs rather than tuning to perfection, this is also a good choice in the vast majority of instances to enhance performance. Color coded RED/WHITE.
BLUE Spring, Enhanced Power, Carbine Length: the design loads of this spring are approximately 15% greater than the white spring for one of the considered load constants. Tactical Springs was encouraged to manufacture this color by Mike Pannone of CTT Solutions who had modified a red spring and recommended a version with similar loads to address high performance demands of other specimen platforms. While contemporary internet forum lore leans towards the use of the blue spring with an H2 buffer for 14.5 – 16” mid-length gassed carbines, nothing is set in stone due to the vast range of gas port values in the industry. Color coded BLUE.
RED Spring, Extra Power, Carbine Length: the first AR buffer spring solution that Tactical Springs was tasked to design back in 2006 for a Force Modernization Team specifically addressing spring-related M4 reliability issues for operating challenges in the East Asia Theatre. The design loads of the red spring are approximately 25% greater than the white version for one of the considered load constants. 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 models can deviate from the norm depending upon port values and the power factor of your chosen ammunition loads. Color coded RED.
NOTE: 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, KAC, 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, Carbine Length: this 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, DPMS pattern carbine applications using standard 7″ depth M4 extension tubes, and short 2.5″ buffers (including aftermarket “heavy buffers”) in robustly gassed 16” – 18” mid-length gas platforms. It’s likewise 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.
NOTE: 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: this 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 7.75” intermediate depth A5/MK2 extensions with 4” length A5 buffers. The design loads of this spring are equivalent to a new mil-spec rifle 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 extensions, it may sometimes be appropriate for use in long barrel (20”+) rifle length gas systems in AR10/SR25 heavier calibers such as .308, 6.5 CM, .260 Rem, etc. (may not be effective for unsuppressed 7.62X51). 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 the 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 BCGs.
Because we are fans of the A5/MK2 system, all of the green springs we sell receive cryogenic processing for a very predictable, uniform performance within the weapon’s operating cycle. This computerized, ultra-low temperature process (-320°F) increases the strength, and wear life, of the parent material through a change in microstructure resulting in less retained austenite, and more uniformity in grain structure. Cryogenics effectively combats high stress cyclic rates, premature wear, and shortened spring life. Color coded GREEN
Note: Buffer should be inserted into the color-coded end of the spring for fast identification once installed.
| Color | Yellow, White, Red/White, Blue, Red, Orange, Green |
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