BRD Gun Works

CONSTRUCTION SPECS: CARBINE & RIFLE BUFFER SPRINGS

• ASTM Grade A877 Certified Valve Quality Chrome silicon Wirestock

• Heat Treated, Stress Relieved and Dual Stage Shot-Peened post winding

• Impregnation / Plating with Re-Micronized Molybdenum Disulfide formulation

• Hard plastic tube packaging for protected transport and easy storage (Tubes make great storage compartments for all sorts of gear)

ADVANTAGES:

• Increased “lock time” for faster sight recovery and platform stability

• Consistent spring pressure throughout the duty cycle of the spring, resulting in fewer malfunctions related to spring operation (Especially Type III malfunctions)

• Improved & consistent cyclic operation. Spring will not change performance for many hundreds of thousands of rounds

• Greater resistance to heat induced performance degradation

• Reduced cyclic rate with Enhanced or Extra Power springs and reduce / eliminate bolt bounce with optimal spring / buffer weight selection

• Reduced operating cost as replacement springs are not needed during the life of your upper receiver assembly. Less downtime and fewer trips to the armorer for spring replacement, in fact, this will most likely be the only buffer spring you will ever need for the duty cycle of your carbine or rifle!

• Correct spring selection works reliably, consistently, and virtually indefinitely in all properly built and maintained AR platforms

White Spring:

Standard Power Buffer Spring. 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.

Red/White (AKA Hot White):

Intermediate Power Buffer Spring. 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.

Blue Spring: 

Enhanced Power Buffer Spring. The design loads of the Blue spring are approximately 15% greater than the White spring for one of the considered Load Constants in the spring design. Contemporary internet forum lore leans towards the use of the Blue spring with an H2 or ST-T2 buffer for 14.5 – 16” ML carbines, but nothing is set in stone due to the vast range of gas port values and gas system tolerances that are found in the AR industry.

Red Spring:

Extra Power Buffer Spring. 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. 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 gas port values and the power factor of your chosen ammunition loads.

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 receiver 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.).

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 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.