AR Technical Discussion [Archive] - Page 20

Barrel replacement (11 replies)
SWS rails (1 replies)
Best buffer and spring for wife's lightweight build? (5 replies)
LWRC LPK - anyone? (8 replies)
Troy front buis (2 replies)
Stiff buffer spring? (32 replies)
Finish Touchup (16 replies)
Question about small pin lower receivers? (1 replies)
ArmaLite 20" Barrel outer profile (0 replies)
Canted Carry Handle Sight (12 replies)
Handguards for a Colt Commando (6 replies)
Just fought an hour-long, pitched battle with... (19 replies)
gas tube roll pin too small??? (5 replies)
Is there a chart for which buffer to use? (2 replies)
Best way to clock a compensator? (15 replies)
Best buffer - 16" middy? (24 replies)
Govt profile dimensions (7 replies)
Noveske Rails for Switchblock ??? (3 replies)
Another bolt not held open malf (2 replies)
Gas port erosion? (6 replies)
GAS PORT DIMENSIONS (11 replies)
M4 Questions? (1 replies)
Another Best Buffer Question (10 replies)
Which Chrome bolt/carrier for a DMR rig? (22 replies)
Need 2-stage Match trigger for Colt size FCG (3 replies)
moe hg top rail? (3 replies)
Heavier spring or heavier buffer: which is better? (59 replies)
changing collapsible stock (7 replies)
BCM Barrels (6 replies)
locking lug integrity differences between m4/m16 (11 replies)
Quick question on removing FSB (8 replies)
Bolt not locking back... need your help! (46 replies)
LMT MRP Conversion Question (3 replies)
How the heck did this happen? (16 replies)
Lightweight FF tubes with no rail covers. Hot?? (7 replies)
Need Armorer... (8 replies)
Why do Noveske barrels already have the gas block installed? (3 replies)
Do I need to pin the gas block (61 replies)
Free float handguards vrs. Drop in two peace hand guards (31 replies)
Durability of Timney triggers (2 replies)
Why not permanently attach a Flash Hider w/ +1,100 degree silver solder? (32 replies)
SBR LMT Gas Block Question (3 replies)
Magpul BAD Lever "Mod" (4 replies)
Question about the pull on Geissele competition trigger. (6 replies)
Charging handles (25 replies)
How did I do? First time staking an endplate and it was an ASAP (70 replies)
Loose Barrel Nut (15 replies)
LMT MRP piston Cam Pin Wear? - Pics (51 replies)
Question on barrel profiles (6 replies)
Convert Colt M4 to middy (6 replies)
Wilson Combat TTU follow up. (13 replies)
Question BattleComp vs KAC TripleTap (25 replies)
Barrel harmonics (24 replies)
Gas ring question.. (8 replies)
Recountouring / fluting a barrel : Stainless vs CMV/Chrome Moly (17 replies)
found a bur in my barrel. What do I do? (38 replies)
taking flash sup off 12.5" w/ 11" rail? (7 replies)
Sprinco CS Buffer Springs (6 replies)
BCG head space ? (21 replies)
AR parts replacement (24 replies)
Bulged Barrel on LMT 10.5" (12 replies)
Stuck cases, popped primers, and a ruined bolt. (21 replies)
Daniel Defense Lite Rail Handguard Installed (6 replies)
A1? Upper to Flattop (5 replies)
Gas ring issue***updated (23 replies)
AR-Restor (10 replies)
Handguard picatinny rail screw size and thread (0 replies)
Anyone have a Troy M4 OEM QD plate? (2 replies)
Rifle with carbine stock (18 replies)
DEZ Arms Barrels- Are They Good? (11 replies)
A2 stock on carbine? (6 replies)
Concerns about bare aluminum inside upper receiver (3 replies)
The new barrel paradigm....GP LW CHF / P MW SS (50 replies)
Prep for pinning a gas block (5 replies)
Need to turn a barrel down---how far? (5 replies)
Muzzle Device Experimentation Method (9 replies)
anybody use Lother Walther barrels yet ? (1 replies)
Instal help on Battle Comp 1.0 (26 replies)
H&K MR556 (7 replies)
Remove/Replace flash hider. New crush washer? (10 replies)
BCM 14.5 mid length question. (7 replies)
Aero lower w/ Geissele SSA hammer not dropping freely (4 replies)
Carrier Key gas leak (12 replies)
Trouble with new upper. (6 replies)
What are some possible causes of these failures? (17 replies)
Recommend middie BBL. for next AR (18 replies)
Titanium M4 Parts (24 replies)
Manufacturers Using Delrin (0 replies)
Acceptable front post height: poll added 09.09.10 (14 replies)
QD sling swivel mount (4 replies)
which comp/flash hider: battlecomp or pws fsc556 (15 replies)
What really fails on the AR? (60 replies)
Daniel Defense M4 rail removal (20 replies)
Softer recoil impulse. (81 replies)
Second shot failure (9 replies)
Creating a Middie 14.5 Barrel? (11 replies)
Need to find lower parts, but don't need a whole kit (9 replies)
Admitting Defeat... (5 replies)
How to blacken laser engraving? (20 replies)
loose fitting CTR (19 replies)
Uniformity of Chrome Lining? (17 replies)
Troglodyte Maintenance for the AR-15/M-16 (36 replies)
What are the risks of using a cheap LPK? (30 replies)
Broken Colt bolt, and what to look for... (20 replies)
Pins walking (8 replies)
Accuracy Potential; BCM SS410 vs. BCM BFH (4 replies)
Does this Safety Fail? (2 replies)
My review of a new BCM 14.5 Middy (41 replies)
permanently attaching a muzzle brake (8 replies)
Barrel nut removal help - Lightweight barrel will not stop rotating in vice jaws (32 replies)
Couple of Carry Handle Questions (4 replies)
rra vs dd (14 replies)
Accuracy Evaluation of Six Different Noveske Barrels (40 replies)
M16 A1 barrel 1 in 12 twist (21 replies)
Who's writing for PS Magazine??? (0 replies)
Name & Use Of This Part Of Bolt? (59 replies)
DD FF Rail Differences? (6 replies)
I need somebody to talk me through a spring swap on a Timney trigger and KNS AWPs ... (3 replies)
1:7 v. 1:9 for 55gr/75 gr (39 replies)
Bolt Carriers? (3 replies)
BCM 14.5 middy 12" rails & AAC MITER? (0 replies)
Adams Arms build question (0 replies)
DD Lite 12 FSP + pinned sight block? (13 replies)
I can not get my KAC M5 rail on...period. (8 replies)
grip screw threads?? (1 replies)
Mil-Spec receiver extension tube (10 replies)
Fixed Carbine Stock Extensions (2 replies)
trade out carbine for mid length barrel (13 replies)
Bushmaster XM15 E2S 25k vs others, reliability/durability (45 replies)
Wilson Combat TTU trigger info ? (33 replies)
Using an M4 upper for an A3 build...issues? (15 replies)
Help removing RRA pistol buffer tube w/ loctite (14 replies)
aperature diameter question between rear buis (4 replies)
Will KAC M5 RAS Rail fit Colt Heavy Barrel Upper? (1 replies)
Weapon fires during trigger re-set while dry firing. (48 replies)
Help installing Vltor Modstock (6 replies)
Are these gas rings done? (14 replies)
Rails for fat gas block (0 replies)
Gas blocks: like metals? (2 replies)
Bushmaster barrel issue? (7 replies)
How do pin your castle nut with a MP ASAP Plate? (17 replies)
I messed up a Colt 14.5" barrel while drilling it for an extended FH (53 replies)
Front sight & flash hider (4 replies)
Tac Sol AR-22 LT Hogue Handguard Removal? (3 replies)
How to tell if a PMAG will drop free or not (12 replies)
DDM4 selector issue (3 replies)
DDM4 Upper meets Bushy lower. (25 replies)
Pinned Gas Block Question (2 replies)
Colt 6400C barrel threading (7 replies)
Parts (9 replies)
Techie Question (13 replies)
Do Mil-Spec and Commercial Buffer tubes have the same rate of thread? (5 replies)
Proper Rail Install (8 replies)
Colt Upgrade Trigger Kit - SPK94774 (4 replies)
Smith & Wesson M&P15TS - First Look - Updated 5/7/11 (91 replies)
Better Than Tinker Toys! Turning a VLTOR MUR Into a "DMR" (35 replies)
Cant find an 16' SP1 upper - HELP (11 replies)
ARMS 71 polymer sights (8 replies)
Headspace gauges (10 replies)
Adjusting VLTOR stock travel (2 replies)
Headspacing, Bolt Matching and Barrel Extension Questions (1 replies)
What buffer to use with UBR - 18 inch barrel (12 replies)
How much do buffer weights affect cyclic rate? (1 replies)
Noise sensitive shooter, quietest non-supressor muzzle devices? (38 replies)
changing barrels on a KAC SR-15E3. (8 replies)
Hard extraction with CMMG 11.5" upper (3 replies)
Vortex on BCM 14.5 (14 replies)
Keyholing at 25 yards (33 replies)
There is something wrong with my ammo (25 replies)
Please educate me on the Vltor CASV-EL Rail (4 replies)
Buffer change with new upper? (0 replies)
ASAP and tightening castle nut (7 replies)
No "O" ring for middy? (14 replies)
Round top hammer "fit" problem (4 replies)
Troy TRX Extreme 9" (2 replies)
Changing buffers=changing zero? (7 replies)
M34 Tactical ARMT (Assault Rifle Multi-Tool) (3 replies)
Question about BCM BFH barrels (6 replies)
swapping bolt carrier groups/spare parts (10 replies)
Stainless Steel, Rust and Steel Wool (0 replies)
Spikes Tactical 5.56 muzzle break (0 replies)
Removing FSB sling swivel (2 replies)
UBR storage screws: in or out? (7 replies)
Is my UBR defective? (4 replies)
How to refinish an old buttstock? (15 replies)
Final Report = "Fire To Destruction Test of U.S. M4A1 Carbine & M16A2 Rife Barrel(s)" (28 replies)
Magazine Catch issues (31 replies)
Why is the 14.5 Mid better than 16 Mid? (3 replies)
Free Floating (15 replies)
Is there any advantage to getting a hammer-forged barrel? (5 replies)
Chopping and BCM Mid Length? (4 replies)
Is my VTAC TRX Extreme over tightened? (6 replies)
Fail Zero with extractor upgrade (12 replies)
Question about BCM mid length gas port size (1 replies)
Live round stuck in chamber! (20 replies)
KAC RAS Rail Cover Installation (10 replies)
rail system (1 replies)
A couple buffer spring, and buffer questions: (14 replies)
Stovepiping jam on AR15 (25 replies)
Bolt Group Upgrade Parts, AR6520 - Same as LE6920 ? (1 replies)
Does anyone know of a video which disproves the gas ring alignment myth? (16 replies)
yet another mk12 upper question: (2 replies)
Compilation of Threads on Picking a Lower (0 replies)
AR-15 Buffer Test - High Speed Video (119 replies)
CMMG Lowers (6 replies)
Safety Selector (15 replies)
Firing pin leaves dimple on primer... (12 replies)
KNS pins to long? (32 replies)
Mistake on my part (Centurion Chamber) (14 replies)
Help on securing roll pins in stock (4 replies)
Scored or machining marks on the chamber face. Help ! (15 replies)
Rifle gas tube (4 replies)
Noveske trigger problem... (2 replies)
failure to load (9 replies)
BBL install problem, again (5 replies)
New 14.5" CHF barrel problems? (8 replies)
Colt 6400C barrel rust-help! (17 replies)
Colt Ar-15 A-3 Tactical Carbine Question (16 replies)
rails rails rails (9 replies)
possible upper issue??? (11 replies)
Shave FSB or replace? (23 replies)
Converting S&W M&P15A to a top tier gun? (33 replies)
need some knowledge..... (18 replies)
LMT MRP piston minor problem (1 replies)
Barrel help. (8 replies)
ADAMS ARMS SHORT STROKING (7 replies)
Buffer question (11 replies)
Surplus Ammo & Arms Lower (9 replies)
Remove roll pin on bolt release? (5 replies)
BCM 11.5" Middy (12 replies)
DD Lite Rail 12 FSP (8 replies)
offset rear sight (4 replies)
DD Lite vs. URX? (5 replies)
Which lo-pro gas block? (12 replies)
Need advice re: severe malfunction today (25 replies)
MRP CQB 16" SS (3 replies)
Bravo Standard or BFH or Spike's? (24 replies)
CMMG Clamp On Piston System? (39 replies)
Best way to remove rockset brake???? (10 replies)
Removing Noveske SWS Rail (1 replies)
Roll-Pin punch support. (28 replies)
problems after cleaning (6 replies)
dd mk18 rail trying to understand m203 or no (10 replies)
feeding problem (4 replies)
Wolf too weak or Buffer too heavy? (18 replies)
Cav Arms C8 Handguards Won't Fit (1 replies)
LMT BCG (7 replies)
Barrel Break In? (3 replies)
2 quick lower build ?'s (4 replies)
Height comparison of DD omega and Troy trx standard (1 replies)