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  1. Noveske Barrel Index Pin wobble PROBLEM... Please help. (5 replies)
  2. Knights SR15 stripped barrels availability? (6 replies)
  3. A2 FH installation question (23 replies)
  4. Supressed SBR Buffer weight to Buffer weight w/Adjustable Gas Block Question (9 replies)
  5. Hydraulic recoil buffers (17 replies)
  6. Chatter marks in new CHF barrel (4 replies)
  7. Help diagnosing multiple issues today (26 replies)
  8. Lubriplate 130-a (16 replies)
  9. How is a 7.5" barrel with pistol gas for 300BLK? (20 replies)
  10. TRIGGER ENHANCEMENT PAD (T.E.P.) pros/cons (14 replies)
  11. Vltor A5 , 5 position vs 7 position (14 replies)
  12. Help identifying AR handguard (19 replies)
  13. New Bolt Issue (25 replies)
  14. Cerakoting or Hydro dipping BUIS? (4 replies)
  15. Barrel profile question? (7 replies)
  16. What hammer/trigger is this? (6 replies)
  17. Taming the 10.5 (49 replies)
  18. 11.5” Colt FBI Barrel Ejection (45 replies)
  19. What gas blocks fit under the Centurion CMR Mlok Handguard? (7 replies)
  20. Fix this or leave it? (7 replies)
  21. VG6 556Gamma brake, thoughts? (16 replies)
  22. Accuracy with BHD builds (0 replies)
  23. New build with VLTOR A5 Kit...Go with ADJ or NA Gas Block? (18 replies)
  24. KAC SR-15 FTF w/ SD-3G (17 replies)
  25. Interesting results after grouping my standard and BFH BCM barrels - update 02 JUN (87 replies)
  26. Green Mnt. barrel for budget spr build? (10 replies)
  27. Acurracy issue/possible chamber problem (23 replies)
  28. They drilled to far on the pin and weld job. (50 replies)
  29. Barrel profile question? (16 replies)
  30. Dry Film Lube and the TDP (26 replies)
  31. Has BCM ever made non-chrome lined BBLs? (3 replies)
  32. Elevation Issue with mounting RDS on carry handle? (9 replies)
  33. Trigger Pin Troubleshooting (23 replies)
  34. Advantages to having a .750 gas port vs . 625 on a mid-weight barrel (18 replies)
  35. sketchy Colt expanse lower (1 replies)
  36. SSP Trigger Spring Replacement Options? (3 replies)
  37. Kaw Valley Precision (9 replies)
  38. Non-Dimpled Barrel Gas Block Installation 2019 (50 replies)
  39. Handguard install problem (13 replies)
  40. Rotational Recoil Bias (5 replies)
  41. Back up irons or not? Opinion and why... (1 replies)
  42. DDM4V7P FTF (16 replies)
  43. PSA upper rail canted (28 replies)
  44. Magpul bipod. M-LOK vs picatinny (25 replies)
  45. Index pin. barrel on - barrel off? (9 replies)
  46. Used Colt bolt (1500-2000 rds) and new barrel. Or should I buy a new bolt? (17 replies)
  47. Wilson TTU vs Geissele SSP (55 replies)
  48. Very strange gas problem. (11 replies)
  49. Barrel lining - beyond chrome lining (22 replies)
  50. Nick Wantland - VLTOR A5 Buffer System (55 replies)
  51. Relationship between buffer weight and spring weight?? (17 replies)
  52. Rifle Gas Ejection/Lock Back/Gas Issue (43 replies)
  53. Barrel Extension Finish (9 replies)
  54. School me on endplate manufacturing? (32 replies)
  55. clearance between free float rail and shaved FSB (23 replies)
  56. Optic for Basic AR (24 replies)
  57. Gas Rings----Which Ones? (9 replies)
  58. Lower Receiver Flashing (2 replies)
  59. What kind of problems could a 22 conversion kit cause for my barrel? (24 replies)
  60. Smooth barrel profile vs “shelves” (4 replies)
  61. Flash hider torque specs that cause accuracy issues (34 replies)
  62. Barrel Nut Material (5 replies)
  63. Ejection angle? (21 replies)
  64. Smoothing out the 11.5 (33 replies)
  65. Forgot upper clamshell insert. (3 replies)
  66. Drill Bit for Dimpling Stainless Barrel (31 replies)
  67. LMT MRPs - worth the expense? (28 replies)
  68. Need help. BCG does not rack while takedown pin is in. (8 replies)
  69. Need help Id'ing a BCG (5 replies)
  70. How big of a gap is normal? (5 replies)
  71. Strange Issue w/ Colt & PMAG (4 replies)
  72. Mid Length hand guard upgrade (7 replies)
  73. Bolt Defect in Colt LE6940 ? (5 replies)
  74. Removing condensation from chamber ? (16 replies)
  75. Rusting on new KAC SR15 (17 replies)
  76. Ruined 80 lower? (16 replies)
  77. JP Tactical Trigger Spring Kit (9 replies)
  78. How can a BCG change recoil impulse? (25 replies)
  79. Intermittent extraction problem (12 replies)
  80. Correct/Original Stock for August 2002 Colt LE6921? (1 replies)
  81. A5 Questions (32 replies)
  82. Complete AR15 CAD assembly + Colt M16 Technical Data Package (24 replies)
  83. Safety selector loose on 80% build (17 replies)
  84. Barrel for 7.62x39 AR build (2 replies)
  85. "Cassette" Drop In type triggers...educate me. (28 replies)
  86. Barrel choice for shooting steel exclusively (22 replies)
  87. .450 Bushmaster What Buffer and Spring (6 replies)
  88. Colt History Questions (16 replies)
  89. Hammer Forged Barrel vs. 4150CMV Barrel - QPQ Coated - MPI/HPT (18 replies)
  90. Questions about building a .450 Bushmaster (4 replies)
  91. PARA USA TTR rifle (4 replies)
  92. Clamp On or Set Screw Gas Block (24 replies)
  93. Midwest Industries Chrome Lining (3 replies)
  94. re-barreling Colt 6920 after some use (12 replies)
  95. KAC RAS doesn’t fit BCM SOCOM upper? (7 replies)
  96. "Precision" Build Questions... (15 replies)
  97. Aero precision lower issues (29 replies)
  98. Nitride treated bolts and barrel extensions. (16 replies)
  99. DD MK 18 and DD M4 V7 (13 replies)
  100. Ballistic Advantage 11.5 Malfunctions (23 replies)
  101. SBR failures to feed (31 replies)
  102. Removing bcm kmr keymod rail (6 replies)
  103. KAC sandcutter vs LMT enhanced BCG? (3 replies)
  104. vltor a5 questions. (1 replies)
  105. Geissele Trigger with.... (11 replies)
  106. LMT MIM gas key failure (29 replies)
  107. Short Stroke After Hand Guard Change (10 replies)
  108. H or H2 for Colt SOCOM Barrel (15 replies)
  109. Buffer tubes and springs. (10 replies)
  110. Basic Question: Does a Rifle Length Gas System Need a Rifle Length Buffer Tube? (38 replies)
  111. Bear Creek Arsenal (2 replies)
  112. Any preferred punches/punch set? (26 replies)
  113. Real world pull weight of LaRue Tactical MBT-2S Trigger? (38 replies)
  114. 12.5 barrel carbine vs mid (55 replies)
  115. Aero Lower tight with USGI mags (20 replies)
  116. Magpul B.A.D. lever for AR (30 replies)
  117. Forward Controls ABC/R Enhancement (51 replies)
  118. Raw aluminum pin holes (2 replies)
  119. LMT Magwell Tolerances (30 replies)
  120. BCG Comparison (2 replies)
  121. Reliability testing (29 replies)
  122. Gas tube pin on FSB (9 replies)
  123. Dropping the Hammer with the Receivers Separated (12 replies)
  124. Long Term Durability of Rocksett on Muzzle Threads and Installation Torque? (16 replies)
  125. A2 apreture for A1 upper reciever? (14 replies)
  126. Reaction rod fitment (17 replies)
  127. BCG Questions (135 replies)
  128. Colt Sporter Upper Needs a Barrel Assembly- Need Help (20 replies)
  129. Undergassed DD 14.5 mid (URG-1 type) (19 replies)
  130. Small Gas Port Runs A5H4? Anomaly? (3 replies)
  131. Best spring for extractor (18 replies)
  132. Criterion vs FN CHF Barrels (45 replies)
  133. Used Warcomp, no suppressor: Just use a crush washer? (5 replies)
  134. Question about pressures with a suppressed LWRC (2 replies)
  135. AR10 upgrade buffer&spring - opinions? (29 replies)
  136. Chrome-lining early wear ? (10 replies)
  137. govt profile barrel and FSB for kino setup (9 replies)
  138. Remove excess material from LMT ambi safety (9 replies)
  139. TLR Weapon Mounted Light Switches (5 replies)
  140. Aero lower issue (11 replies)
  141. 16" intermediate gas, gas port sizes. My SR15 is undergassed, lets talk ideal sizes. (23 replies)
  142. Small Arms Solutions video: "The Buffer - Theory and when to Use What Buffer" (55 replies)
  143. AR gas system (3 replies)
  144. First Pistol Build: Tips for installing Flash Can (5 replies)
  145. LMT Mars lower safety engages when not charged (1 replies)
  146. Forward charging handle (33 replies)
  147. S&W M&P 10 battery assist device compatability search (0 replies)
  148. Handguard mounted front sight POA/POI change testing after being dropped (9 replies)
  149. How to identify upper receiver? (10 replies)
  150. AR feed malfunction (14 replies)
  151. Cons of pinning and welding a suppressor mount (25 replies)
  152. LMT New Zealand rifle (3 replies)
  153. LWRC Suppressed and Buffer & Spring question (3 replies)
  154. Formerly reliable BCM 11.5" upper has sudden issues PART II (21 replies)
  155. BCM gas key bolt failure (2 replies)
  156. CLE barrel options for SPR build (9 replies)
  157. AR Piston Upper - Not a DI vs. Piston Question (66 replies)
  158. Help with A5 buffer choice (51 replies)
  159. Special ops tactical angled gas port. (14 replies)
  160. Colt SOCOM vs Daniel Defense Barrels? (21 replies)
  161. AR-15 inspection (1 replies)
  162. Lmt carrier = noticeable difference? (31 replies)
  163. Buffer weight. (23 replies)
  164. Upper/Lower Fitment Issue (19 replies)
  165. Dimple on a QPQ Nitride Barrel (22 replies)
  166. DD mk18 failure to feed?Magazine issue or something else? (17 replies)
  167. AR-556 Delta Ring (8 replies)
  168. BCM 14.5” Midlength - Ideal buffer/spring combo (10 replies)
  169. School me on what determines the AR gas port size (7 replies)
  170. 5.56mm QDSS NT4 and Triple Tap (4 replies)
  171. DD 11.5" or a Sionics 11.5" barrel? (25 replies)
  172. Adjustable Gas Blocks with suppressor usage (1 replies)
  173. 11.5 Middy for dedicated suppressed use (12 replies)
  174. Reloading with bolt locked back - first round doesn't feed completely (16 replies)
  175. Hydro dipped furniture (3 replies)
  176. Barrel Nut Removal Tips? (52 replies)
  177. Firing pins and cam pins (16 replies)
  178. Bolt Lock Back Issues... Not Sure Why? (28 replies)
  179. Gas port location thoughts (35 replies)
  180. Bushy Mag Release Issues (5 replies)
  181. Geissele SMR Barrel Nut Compatibility - Mk1 vs Mk8 Mlok (7 replies)
  182. What spare parts to get (16 replies)
  183. Looking at Seekins Precision Rook or Nest flash hiders. (10 replies)
  184. replacement firing pin rec (7 replies)
  185. using gun scrubber to remove oil in chamber ? (6 replies)
  186. SR-15 Out of Spec...? (10 replies)
  187. Colt AR15A4 ... to A2? (12 replies)
  188. So, this happened while shooting my newest rifle...five times during one magazine (19 replies)
  189. Formerly reliable BCM 11.5" upper has sudden cycling issues (23 replies)
  190. Worth Opening a Gas Port? (9 replies)
  191. Super Accurate 16" Complete Upper (9 replies)
  192. LMT Enhanced BCG - Full Auto or Semi and Other Question (16 replies)
  193. Gas System? (3 replies)
  194. 18 Inch AR Barrel Questions (55 replies)
  195. Issues with Noveske SPR barrel and Surefire FH (12 replies)
  196. 11.5” Barrel Profile. (8 replies)
  197. Looking for chamber & fcg blueprints (4 replies)
  198. Bolt under cartridge FTF/Malf (18 replies)
  199. Bluish-green patina on suppressor/mount (13 replies)
  200. Which BCM 11.5” Upper To Go With? (6 replies)
  201. Fulton Armory upper reciever's? (2 replies)
  202. Will this work, or Can you help me? Blanks/Suppressor (13 replies)
  203. Knights LMAG constant-recoil/spring run-out operation VS AR buffer system (4 replies)
  204. Any downside to re-contouring a barrel into LW vs just replacing with a new one? (32 replies)
  205. colt # on Ltwt Sporter (1 replies)
  206. Does my build look okay? (37 replies)
  207. How do I remove this handguard? (10 replies)
  208. LMT Mars-L Ambi (7 replies)
  209. Wind at 100 yards (6 replies)
  210. Noveske, Daniel Defense, or other? (CHF Barrel) (55 replies)
  211. Looking for a new 16-18 inch Precision barrel (42 replies)
  212. Colt HBAR 16" cut to 11.5" without opening up the gas port? (17 replies)
  213. Silencerco asr brake (4 replies)
  214. Pur-tungsten.com Buffer Weights (10 replies)
  215. KAC M5 Rifle RAS question? (7 replies)
  216. Faxon 16inch heavy fluted barrel questions. (5 replies)
  217. Rust under front A2 sight? (7 replies)
  218. Cutting 16” DPMS to 14.88” (36 replies)
  219. Barrel Contour on DD Lightweight and Colt CCU (0 replies)
  220. XM177 Flash Hider & Grenade Ring? (8 replies)
  221. Bolt over base in new LMT MRP (22 replies)
  222. Precision (lite) barrel material question. (11 replies)
  223. New Upper Range Report--Issues (10 replies)
  224. Trijicon reflex 1x24 optic & Matech rear sight compatibility at long range (1 replies)
  225. BRT OPTIMUM Barrels (882 replies)
  226. Buffer/spring combo for Magpul UBR Gen 2 (9 replies)
  227. FYI - SiCo Trifecta Muzzle Device won't fit through DD Lite rail (0 replies)
  228. Two quick questions (9 replies)
  229. Diagnose malf (25 replies)
  230. Scalarworks Mount for Aimpoint CompM4 (4 replies)
  231. Geissele High Speed National Match-Match trigger doubling (17 replies)
  232. Cracks on bolt face (30 replies)
  233. 14.5" with a nod toward accuracy (50 replies)
  234. BCM SBR blowing primers (12 replies)
  235. Sionics Extreme Reduced Gas Port Barrel, Range Report (138 replies)
  236. Exterior of gas tube coated in carbon (3 replies)
  237. FN 15 Tactical series...pinned gas blocks? (12 replies)
  238. Rail install problem (7 replies)
  239. how to see what size gas block (22 replies)
  240. Muzzle Shim / Peel Washer Comparison Thread (19 replies)
  241. Melonite Noveske barrel (8 replies)
  242. Buffer (and spring?) for 9mm AR 16 barrel no suppressor to mimic a 300 bo (4 replies)
  243. Educate me-Flat wire vs round spring technical data... (47 replies)
  244. Round "cooking off" in the magazine? (38 replies)
  245. Need suggestions for a very rigid rail for new Hodge 12.5in barrel build (27 replies)
  246. Overtorquing flash hider (13 replies)
  247. Using a trigger guard pin to pin a lo-pro gas block (8 replies)
  248. 11.5" Barrel Optimum Gas Port Size (64 replies)
  249. Potentially Dumb Vltor A5 Question (or I’m a genius) (12 replies)
  250. Colt Castle Nut Staking (10 replies)