- Lower damage
- 5.56 vs .223 identify barrell
- Help with a barrel ID
- Need help ID a rail system by looking at the barrel nut
- Mk18 vs bcm/etc with 11.5 barrel and A5 buffer?
- Shortening 6920 to 12.5
- Canted muzzle brake/suppressor misalignment
- Why no new DI designs?
- Urx4/carbine fsb
- House fire rifle risks
- Running a small port barrel
- Build a BCG Like an Idiot? Surprisingly Useful Article from TFB
- How to (not) build a BCG via RRA
- Short cycling 308. Need some help.
- What mount/rings to get? SPR/Varmint rifle.
- Properly Staked carrier key
- Building a website 14.5 mid dissipator question
- Ruger SR-556 Takedown (piston) Technical Spec CHANGES for 2016 Discussion
- Where does the URX 1/2/3 and URX 4 stand in the rail "hierarchy"?
- Bolt catch/release loss of spring tension
- Buffer/BCG question
- The absolute best way to mount your BUIS...anybody ever welded?
- .223 vs 5.56 go no gauges?
- Leveling crosshairs
- Anyone have an 11" Troy Alpha MLOK? Looking for exact length measurement...
- Flash hider torquing
- Handguard Recommendation for a Noveske 12.5in Mid Length to Cover Gas Block?
- overtorqued question
- How to install an AGB on a bbl. with taper pin holes
- Function of mid-length gas vs. LMT enhanced carrier?
- Feed Ramp Wear
- Notched ar15 hammer?
- Chrome Lining uneven at muzzle
- USGI mags outlast all others
- Colt 20 Round Magazines - Worth Upgrading?
- Pin .625" gas block on BCM 16" ELW barrel?
- Weird FTE problem with my carbine
- So bcg in nickle boron or hard chrome
- Chg handle question
- Where's the PSA chf nitride barrel from?
- Upper Receiver Decision
- Crane O ring needed on a middy?
- What is the Proper Method for Installing Extractor Springs?
- BCM gas block and Centurion CMR rail- shave it?
- Safety detent hole too shallow
- Trimming takedown detent spring?
- BCM ELW barrel, possible to install a fixed front sight?
- Odd wear in a BCM upper?
- Blown primers (Independence XM193i related)
- Ever had an Extractor Spring/Insert/O-Ring just fall out?
- Gas block leakage?
- AR Build
- Seriously BCM? What do you use for FSB pins? Or: Never invade Russia in Winter.
- Help Ar 15 short stroking !
- The ratcheting castle nut
- Hammer and Trigger pins moving
- Function testing magazines
- Which A5 buffer to use with SR-15 11.5 CQB MOD 2?
- Knights Armament Safety Detent Questions
- Help me diagnose what is causing this
- New guy with a bolt carrier question
- Basic Troubleshooting 101
- Enlarge 0-2 aperture?
- Question about Daniel Defense Rail
- Magpul Armorers Wrench
- Please help troubleshoot my AR!
- Swapping my ambi safety selector to other side?
- Feeding issue, narrowed down to bolt.
- Dry FIRE?? DESPITE SUCCESSFUL STROKE??
- Gas port size for a 14.5" Colt socom barrel?
- Chrome Lined VS Not
- Lifespan & wear of 5.56 AR barrels vs. .308 AR barrels.
- Rail for Noveske 12.5 barrel and Sico ASR Flash hider
- Feeding/Extraction issues
- Rifle Buffer with Tungsten Weight(s)?
- Questions regarding pinning and welding muzzle devise on barrel?
- Bolt Lug (wear) cause
- Why PMAGs are better than aluminum USGI
- Gas-port regulating gas-block insert install and DIY manufacture.
- Drop in (2 piece) free float handguards.
- Is the barrel of the FN 15 Tactical II made from the M249 material/chrome?
- Gas block question.. Is it salvageable???
- removing tight fit barrel
- Magpul MOE fixed carbine stock and BCM A5 RE
- Buffer Issue that Doesn't Make Sense to Me, Please Explain
- Question about barreling an upper receiver
- AR Tuning and Out of Spec Parts
- Best general port size for MK18 build
- SSA-E not resetting with suppressor
- H3 Buffer
- Gas block for Colt 6920 barrel
- new build - SLR sentry 7 adj GB issue
- Anybody use this trigger?
- Has anyone used the Armaspec XPDW stock?
- Best Barrel
- Taking off an LMT FSB separates the men from the boys.
- Newb gas block question
- Chrome Lining Process
- Help me find some new fangled FSB bench block (for FSB removals)?
- Colt Expanse Kaboom
- New Adams Arms Agency Carbine and a few questions
- A15 won't cycle
- Help me troubleshoot FTE (eject) please
- Gas port sizing
- Lightweight BCG & .300 blackout... Stupid Idea?
- KAC SR-15 E3 Mod 2 URX 4 removal
- FSB removal and re-installation: FSB alignment...
- Magpul QD Swivel socket
- Is it time to try some barrel nut shims?
- Help with failures to extract ... found potential cause ... do not understand
- DD MK18 begining to keyhole
- Quick trigger guard roll pin question
- Help with case head separation
- How does this castle nut staking look?
- Shaved front sight under kmr
- New LE6920s...is this a QC issue? Or am I reading into it too much?
- What ammo for bcm 14.5 lw bbl @ 300 yds?
- Reset Issue on DDM4 with Tac-Con & SlideFire.......
- Kac 2 Stage Trigger Issue?
- DD complete upper, looking for lower advice.
- Wear marks on buffer face
- Carbine Vs Middy
- Average price for 'smith to assemble an AR?
- H6 Buffer in BCM mid length.
- Why aren't monolithic uppers standardized?
- First lower build questions
- DI or Piston?
- JP tuned spring in A5 buffersystem
- Plugs In Lower Receiver?
- Gas Tube/Gas Key Making Contact
- Recs for Lightweight Unsuppressed 11.5" Barrel?
- More companies using 9310 bolts, why is this?
- 6940 Folding Front Sight Gas Block
- LPK for ambi Mega Arms lower
- Failure to Feed; Was Failure to extract
- Colt Combat Unit Carbine vs Sionics Patrol Rifle III
- Barrel torque magpul wrench
- BCG eats gas rings
- KAC 14.5 Mod 2 Upper CHANGING Muzzle Device Advice
- Criterion 223 Wylde Reliability
- Faxon Gunner 20" or 18" Barrel Accuracy?
- Torque Wrench Calculator ( Angle + Length )
- Crush Washer or Peel Washers?
- AR started firing on trigger reset and went FA a few times today
- Recommendation for a semi-lightweight 18" precision barrel
- Should I test fire a few rounds after a complete breakdown/cleaning?
- Geissele Super 42 Receiver Damage
- BCM Published Specs?
- Can a magazine cause failures to *eject*?
- 11.5" mid
- Recoil Springs
- Del Ton vs. Criterion Chrome-Lined Lightweight 20" Barrel
- Radian Charging Handle fit HK MR556?
- Springfield Saint barrel
- Short stroking mid length
- DD Mark 18 Blowback Issues
- AR15 Malfunction
- Huuuge groups today, what's going on?
- F-Marked vs Standard A2 FSB on Flattop AR with 20" Barrel and Rifle Gas
- Dimension needed
- Lower Receiver Dimension Issues?
- Removing a rifle receiver extension: it's really stuck
- Gas Port Data
- Carbon build up around gas block?
- Factory Colt upper that apparently doesn't exist, or does it? Info request.
- KAC URX 3.0, Gas Ports, Gas Block Selection
- Ma trigger came in, ?
- Diagnose my 7.5" pistol feeding issues, please
- Aero upper and KMR Alpha rail
- Black Rain Ordnance billet upper and Centurion Arms CMR
- Will the KAC RAS II fit the COLT OEM2 - without modifications
- 16 Inch Middy Gas Port Diameter- What Works?
- 11.5" Noveske vs Sionics port sizing report
- Ballistic Advantage "Hanson" Barrel
- Possible Slamfire Cause?
- Buffer correction for port size? (10.3"/Mk 18-inspired)
- CHROME LINED BARREL BREAK IN PROCEDURE
- Shot peening
- Rockwell hardness on finishes
- Will the HK 416 upper work with a MR556A1 lower ?
- Nevermind, never going piston, DI forever.
- Why Not? Non-Jacketed Frangible
- Colt 6933 chokes on PMC bronze
- Will I need an adjustable gas block?
- Mid length handguard with FSB
- SOCOM Profile barrel with free float handguard
- WHERE TO GET THE BUFFER WEIGHT PADS
- Hammer pin walking
- Chopping 20" USGI A2 barrel to 11.5" is it possible?
- The story of my overgassed DD MK18 & DD CS
- LaRue QD, DD A1.5, LMT type and carry handle sights?
- Just installed Geisselle HS NM trigger on my A4
- LOWER RECEIVERS QUALITY
- Blown primer...what next?
- What material (type of pin) should I use for permanent muzzle brake pin?
- BCM barrel & Geissele SGB set screw spacing, same?
- Question about multiple uppers for the same lower
- FLUTED BARRELS - GOOD OR BAD
- Long-Term Storage: Materials, Mothballs, and Methods
- Buttstock question
- ANYONE EVER HAD PROBLEMS WITH THE HANDGUARD LOOSENING UP WITH A SLING
- Best repair & maintenance manual?
- How does the M4's SOCOM barrel profile compare to the DD S2W profile?
- DI buffer tuning with supressor and Gemtech carrier?
- Shooting AR with no gas rings (video)
- When dimpling/pinning a barrel for gas block install should I worry about bare metal?
- Port size for Daniel Defense 5.56 16" S2W mid-length barrel (and a question about it)
- LMT Enhanced BCG , small change
- Larger Threads At End of Barrel?
- New Magpul UBR-2 bolt not locking back on PMAGS
- Travis Haley on the different AR15 zeros.
- Looking for info on the C8 SFW CQB
- Removing weld/pin on muzzle device?
- How much distance travel with each rotation on MD?
- Pierced primers - monitor your brass
- Looking for information on upper/lower wobble.
- Tools for barrel dimpling for gas block
- New Bcm exceptable or not
- Opinion on lightweight barrels
- More ACOG Reticle Measurements
- SLR Sentry 7 clamp on gas block?
- KAC and Troy Front Sights
- Which barrel would you expect more consistent accuracy from?
- Lessons Learned: Troubleshooting Shortstroking
- Corrected! Colt Expanse CA factory version- flash hider: how attached? See Post #10
- Electropolishing Barrels
- Choosing barrel
- First AR lots of malfunctions.
- Colt 11.5 inch fbi barrel gas port size
- Receiver extension inner diameter help
- Problem extracting live round, Ring cut around bullet
- Bolt Carrier Markings
- Pulled Rear Take Down Pin All The Way Out
- Noveske Switchblock Info Sharing and Modification
- Lightest weight barrel profile you'd hang a suppressor off of?
- Colt 11.5 Hvy Barrel & Knights RAS
- Front Sight Post question
- Are AR-15's assault rifles?
- Extractor Steels
- What's Your Parts Replacement Regimen?
- 300BLK SBR range report...Help
- Best cam pin?
- Are these gas key screws properly staked?
- LMT MRP barrel and upper cut down questions
- MK262 and maintenance
- Ar15 build issue
- Spikes upper, and barrel alignment question
- Are current DD Mk 12 and Mk 4 V7 Rifles really Over-gassed?
- Odd bolt carrier machining?
- Rifle upper on carbine lenght lower?