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Posted: 11/2/2012 6:38:16 AM EDT
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BCM 18" SS410™ Barrel 1/8 Twist
Gas Block: Rainier Arms Low Profile Aero Precision AR15 Stripped Flat Top Upper Receiver AR-15 Free Float Hand Guard 12" Rifle Length TuffZone J&T Bolt Carrier / Latch Magpul-AR-15-Sniper-Stock What kind of rifle length gas tube, rifle extension, buffer, and spring should i get for this build ? My first build so please teach me. 
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Carbine-Length
Most common length gas system. Usually found on barrel lengths from approximately 10”-18”.es of AR-15 rifles. Gas Tube Length: Approximately 7.5” Handguards or free-float tube Length: Generally between 6.5”-7” in length. For a concealed gas block look, buy a free float tube 9" or longer like the Spike's Tactical BAR 9". Mid-Length Commonly used on barrels from 14”-20”. Gas Tube Length: Approximately 9.5” Handguards or free-float tube Length: Generally between 8.5”-9” in length. For a concealed gas block look, buy a free float tube 10" or longer like the Midwest Industries T10. http://vtsupply.com/ar15-gas-tube-sizes-a-4.html measure from the gas port to where the barrel meets the upper receiver. if its anywhere around 7 inches. go with the mid length. remember, the gas tube goes into the upper a good 2 inches. if its to short your AR will not function, if its to long your AR wont function. get an a2 style rifle extension, A2 buffer and A2 spring. any time you have a fixed stock you use the A2 style rifle extension. However there are some magpul stocks on the market that are rifle stocks in nature but are adjustable. I just finished my precision rifle and I had to go through the same steps. |
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