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Magpul Dynamics Art of The Tactical Carbine II 4 DVD Set DYN002
Magpul Dynamics Art of The Tactical Carbine II 4 DVD Set DYN002
 $49.95  $39.95 
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DPMS PH Stainless Steel Buffer Spring Size AR-15 AR15 AR-10 AR10 [BS-10A]  $9.95  $8.95 
 
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DPMS PH 17-7 Stainless Steel Buffer Spring Sizes AR-15 AR15 AR-10 AR10

 

 

 

Description

17-7 PH stainless steel  is a precipitation hardened stainless steel that provides high strength and hardness, excellent fatigue properties, good corrosion resistance, good formability, and minimum distortion upon heat treatment.
The alloy provides valuable property combinations parcularly well suited for aerospace applications. This special alloy also provides benefits for other applications requiring high strength and good corrosion resistance.

(Select either AR15 Full Rifle, AR10 Standard Full Size or AR15 short collapsible tube Carbine Length). M4 spring in MIL-STD 17-7 is a corrected % of Minimum tensile strength (MTS) of 26.1. Bringing it to CS, and it changes to 27.2, which is slightly worse.   Rifle length fits full size A2 fixed length extension tubes. Carbine works in commercial or milspec carbine receiver extension tubes. Conventional wisdom says that a USGI spring is only good for about 5k cycles.

In conclusion, PH stainless steel is more corrosion resistant and possesses slightly better strength than most chrome silicon spring.

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This product was added to our catalog on Monday 17 May, 2010.
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Seekins Precision NOXs 16" Billet Complete Upper AR15 AR-15
Seekins Precision NOXs 16" Billet Complete Upper AR15 AR-15
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