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View Full Version : AR Technical Discussion



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  1. Question on Rear Aperture Subtension
  2. Informative SOPMOD PDF
  3. XS and Meprolight Tritium FSP's...
  4. Sighting in a 16" carbine: help needed
  5. Weird ejection
  6. Anyone have experience with...
  7. converting a gas system
  8. Ammo Info online M193/M855...
  9. flash hider on ban barrel
  10. anti walk pins for colt
  11. question about POF uppers.
  12. Receiver extension installation
  13. reliability package
  14. Tell me about the AR-180 operating system...
  15. Surefire m73 shifting POI
  16. New AR review and questions (S&W)
  17. LMT MRP Gas Tube & Gas Block.......
  18. Troy v. Samson rail?
  19. Magpul trigger guard question
  20. Seeking Advice; Retro-Fit A2 Bushmaster Carbines for Patrol
  21. Required tools to install a barrel and align FSB?
  22. Armalite Tech note on lubrication
  23. Armalite Tech note on lubrication
  24. LMT Defender 2000
  25. Barrel Weight Differences 16" lightweight vs. 16" M4
  26. SD Look- which rail?
  27. Anyone using JP VTAC Forend???
  28. Frangible Ammunition
  29. What lower for CMT upper?
  30. Stupid FSB questions
  31. Bolt failures
  32. KAC 2 peice rails
  33. ok... gas system converted.
  34. Attaching Bipod to Rail Idea
  35. Wolf ammo good enough for 300 meter
  36. LaRue Tactical B.U.I.S. QD LT-103?
  37. Colt Sear Block Removal
  38. how do DPMS LPK rank
  39. Am I "over-buffered"????? H2 Buffers...
  40. Local (S FL) AR grips to try?
  41. Question regarding LMT buffer tube
  42. buffer weights
  43. Bolt and carrier question
  44. Armorers Manuals...
  45. Lower Quality
  46. PRI Gasbuster
  47. Wolff Extra Power Extractor Spring
  48. Brownells 5.56 Mags 30 round
  49. Cotter Pin?
  50. Any .223 Reloaders Here????
  51. Build or buy your high end AR-15 upper?
  52. 16" ghost problem
  53. Help ID shorty upper
  54. Magazine Issues
  55. Barrel Life Questions?
  56. Gas Cutoff Question
  57. LMT heavy buffer marked "H" ??
  58. Larue fixed FRONT sight?!
  59. S/A vs. F/A BCG
  60. What makes an "SPR"???
  61. MGI modular lower
  62. Barrett 6.8 Upper....
  63. Hairline crack on bolt face
  64. How does this happen?
  65. Basic Colt Gunsmithing...
  66. Picture request.. Bolt Carriers
  67. Interchanging/Changing bolts
  68. BCM Bolt Reliability Upgrade Kit
  69. Tubular Forends...
  70. Modded Rifle = Less Market Value???
  71. M-4 short stroke
  72. back again
  73. Aimpoint 3x & LaRue Mount Problem...........
  74. "Tier 2" rifle enhacements
  75. Questions and Problems!!
  76. New Industry NSNs
  77. What is a good source for small parts?
  78. Comparison of hammers
  79. chromed F/A bolt groups?
  80. Anybody make a 20", 1/9 twist, pencil profile barrel?
  81. Which colt m4 has the 3 round burst?
  82. Collapsible Stock/Buffer Tube Removal
  83. LMT 6 Position Stock
  84. Bolt carrier comparision, any difference?
  85. JP Tactical Carrier
  86. Next evolution in Billet lowers!
  87. Sighting in with a Matech.....
  88. Are all lowers 7075t6?
  89. ARES & Bushmaster gas pistons comparison
  90. Muzzle brakes/comps evaluation?
  91. Chamber and Throat Dimensions
  92. Geissele trigger binding on safety
  93. 1913/Picatinny Gas Blocks ?
  94. LMT 2-stage trigger
  95. LPK's is there a difference?
  96. Colt "Low Mass Hammer" ????
  97. Flash Hider Lengths ???
  98. Young MFG. What's the poop?
  99. Question about a bolt
  100. Which Non-Folding Rear BUIS?
  101. ZM weapons questions
  102. Mounting Vickers two point on SW15T
  103. How strong are AR-15 Lower Receivers?
  104. Pigtail gas tubes for 10.5". Any experience ?
  105. Buffer tube question..
  106. Advantages of a Free FLoat handguard?
  107. Need some advice....
  108. LMT Barrels
  109. Which Harris Bipod for 20" A3 Configuration
  110. do gas tubes ware out
  111. Locktite on gas blocks & strap wrench Q's
  112. Trigger Pin Problem ...
  113. Armalite buffer tube.
  114. Twist Rate
  115. Need Gas Block Info...
  116. Best Upper Vise Block????
  117. machinist Q
  118. LMT MRP gas port position Q
  119. tracers
  120. Lead bullets with AR gas systems
  121. Rear Detent fix.
  122. USMC Armorers Wrench Identification...
  123. Carbine, buffer spring varients
  124. JP VTAC Owners...
  125. reviews of buffer system is...
  126. 20" Uupper on an M4 lower...
  127. Removing ACE stock.
  128. Proper Use of .223 Chamber Brush
  129. New AR owner
  130. Headspace??
  131. KAC and Larue Rails...
  132. How hard to line up a DD M4 rail w/upper
  133. Muzzle brake installation questions ...
  134. BUIS over DELTA
  135. BCG question
  136. Colt Low Mass Hammer...
  137. Possible issues with new build
  138. Midlength and Carbine Length Question...
  139. Armorers-Tool Questions....
  140. Choices...Stag or BM? Help me out!
  141. Problems w/ exposed low profile gas block??
  142. What brand and profile bbl should I go w/?
  143. Hammer pin?
  144. Lower parts kit information
  145. Staking Bolt-Carrier Key Screws?--FOLLOW-UP PICS ADDED!!!
  146. cleaning/carbon removal
  147. Melonited Stainless Barrel?
  148. QD push button swivel for SOPMOD stock
  149. Different Cotter Pin
  150. broken shell extractor usage
  151. Rock River Match trigger-large hole or small hole?
  152. Colt AR-15A3 6721
  153. Noveske Rifleworks Lowers
  154. chamber to small?
  155. Is one Milspec buffer tube better than another?
  156. Ladder Rail Cover Question...
  157. Noveske KX3 install
  158. Crush Washers...
  159. Gas Piston Manufacturers...
  160. Mag Slick and Buffer Springs: Good or Bad Idea?
  161. What Back-Up/Contingency Parts?
  162. Canted FSB...
  163. SPR/recce upper, what muzzle device?
  164. found a new short cut
  165. Removing staked castle nut?
  166. Barrel Nut Question
  167. CMMG mag kit & Pmag promo swag
  168. Forge markings on Uppers?
  169. Troy, Samson and Midwest Indsutries FF forearms
  170. Magpul CTR not threaded for rubber butt pad
  171. Colt LPK ???
  172. Sight Movement...removeable carry handle
  173. Front Sights
  174. Trigger
  175. Barrel Length 10.5 - 12" Why?
  176. Very technical question
  177. Bolts
  178. 75gr TAP Info...
  179. Safety Selector Manuf....
  180. I do not know if this is true but.....
  181. How to place dimple for lo-pro GB?
  182. 'Nother Stupid Q: Telestock Wobble?
  183. Putting together a rifle
  184. Magazine guts, CMMG stuff
  185. Adjustable gas block, enlarged port
  186. FSB ???
  187. V-Tac Swivel Stud & Harris Bipod ?
  188. Magpul Mag. problems
  189. I have a problem with my Zero
  190. Carbine cleaning
  191. McFarland Gas Ring
  192. Dewey Lug Recess Cleaning Kit....
  193. Looking for a new barrel...
  194. Different caliber uppers and lowers??
  195. 9mm AR
  196. barrel life?
  197. Can You Help Me Find a Welder?
  198. LMT 2 stage vs. RRA 2 stage triggers
  199. This stock, that stock, everywhere a stock, stock...
  200. Gas System Lengths
  201. Larue vs DD FF rails
  202. Anyone have a BORE SCOPE... My Colt M4 has problems...
  203. Point of impact change?
  204. Steel cased ammo in the AR...
  205. help with r6601 rifle
  206. need help to i d my latest buy
  207. 14.5 vs 16.0
  208. reguarding uppers
  209. Low Tech Pistol Grip Storage
  210. H. H2, H3 or 9mm buffer?
  211. Magpul P-MAGS and S&W M&P15 Tacticals
  212. Prefered sling mount?
  213. 5 & 6 position milspec buffer tubes...
  214. LMT Enhanced BCG, Who uses them??
  215. LMT MRP Barrel problem
  216. Buffer tube erosion....?
  217. LMT purple reciever ?
  218. Cartridge Stuck in Chamber, Help Please
  219. Castle nut staking
  220. Any LMT MRP Users Here????
  221. Upgrade reccomendations
  222. carrier key screws tightened too much
  223. ??? on A1/A2 aperature interchangebility
  224. Spare BCG
  225. Difference between two zeros
  226. Bolt Carrier forge markings.
  227. milsurp ammo question...
  228. To Free float or not........
  229. Wolf ammo on steel targets???
  230. B C M extractor spring upgrade kit
  231. Am I expecting too much. Accuracy
  232. Has anyone tried CMMG's steel follower and braided mag springs?
  233. How much of a PITA is a permanently-attached flash hider?
  234. Pinned Low Profile Gas Block
  235. LCW Lower
  236. Eliminating "wiggle"
  237. NEW UPPER-SDM
  238. Can someone tell me about Ar15 mid-length carbine history?
  239. reciever longevity
  240. 6.8 Info...
  241. Let's Talk about Light Primer Strikes...
  242. JP/V-Tac Modular Hand Guard weight?
  243. Franken'gun mistakes by new guys? What to avoid?
  244. Play in the Hand gaurd.
  245. Colt LE Rifle Production/Serial Number Question
  246. Who has tried the Bill Springfield trigger job?
  247. Noveske 16.1 SS RECON use
  248. Best LPK fot the money?
  249. Enidine recoil buffer
  250. Optic location?