- Stag 3G upper Tunning Help
- Question about a customer's gun: 10.5" SBR w/ suppressor
- Perhaps a dumb question
- Recommended Builders manual
- Burred/Chipped feed ramps
- Gas tube and gas key contact.
- Does this bolt look serviceable?
- FCG
- A2 front sight blade replacement
- PSA Lower and CMMG LPK
- Troy Alpha Rail - Fit of Rail Sections?
- New build question/problem
- case necks getting gouged, pics
- Gas block swap out question
- Chrono Results 16" 1:7
- Tool recommendations wanted
- Centurion C-4 Carbine Cutout Install Question
- Free float installation
- BCG/Buffer/Spring system - Engineering perspective
- Geissele pins walking out EDIT:Geissele CS rocks!
- Upper and lower fitment issue: Upper rear lug not matching with the lower
- Replacement of LR springs
- Stripped threads/flash hider!! Now what?
- Long List of Simple Questions
- Quick FSB shave down question.
- BCM Lower - Selector Switch Locked UP
- 5.56 vs .223, What you know may be wrong
- S&W FSP removal question
- Headspacing and gauges
- .300 blackout upper help
- Need 3/16ths x 1 1/2" splined studs for AR project
- Colt pre ban AR15 Govt Model: specs
- Are these acceptable M4 barrel cuts?
- Funky surface treatment and cracked bolt
- Pmag 30rd jamming
- converting AR to manual operation
- NM front sight?
- Question about barrel instal procedure
- BCG Stuck, need help please...
- Buffertube dimensions for project. Please help!
- LMT mrp piston jamming
- BCM upper receiver assembley issue
- M16/AR-15 Extractor Material?
- Need some advice
- Hybrid DI/Piston Operating System
- Direct Mounting Tutorial
- Profiles for Various Railed Handguards
- how to take the gritty out and lighten my 6920
- MB556K Install
- A5 System better for Suppressed SBR?
- What is the best way to check chamber measurement?
- Do I really need a handguard?
- Problem Fixed.
- Where to buy individual parts for standard GI trigger guard?
- Knight's Armament SR-15 E3 Legacy 16" & SR-15 E3 CQB SBR 11.5" malfunction suppressed
- LAR OPS-4
- Question on SD3G trigger installation
- Brass scoring
- LMT Enhanced Carrier + A5 system + BCM 14.5" middy
- Larue LT751 and absolute cowitness...
- 51T Blackout & Surefire FH556-212A
- CMMG lower won't drop PMAGS, or USGI mags...
- VLTOR VIS-KM (Key Mod) Polylithic Rail
- From the SME forum: Battlecomp on a featureless CA build?
- Deleted
- Gas block accuracy
- Question on Sight Height.
- trigger job
- What ammunition is best with a 1:7 twist
- Colt LE6920 upper on MT6400c lower?
- Cerakote vs Mil-Spec Type III Anodizing
- Mid-length upper on a rifle lower?
- SBR buffer question?
- Barrel nut/delta ring
- DD M4 RIS II RAIL W/ 12.5" Barrel?
- Lmt enhanced bolt.
- Question about the gas key?
- 7.5 AR config advice
- old colt tactical carbine magazine seating problem
- Questions/Discussion on cryogenic barrel treatment.
- Check Headspace when installing new barrel?
- Painting Magazines 101
- Colt 6920 firing issues???
- Lower pain in my @ss.
- Just a question about carbine uppers and rifle length buffer tubes.
- Trigger reset issues
- Undergassed?
- Question about AR recoil
- Buffer Tube Wiggle?
- Lower receiver anodizing
- Oh no! Not another malfunction thread!
- Size Matters: data on AR barrel length and performance
- IG come in here please.
- Mags not seating easily into my Knights lower
- M16/AR15 Sear/Disconnector
- Can I mill a barrel for set srews if it has a pinned FSB
- Young man BCGs
- Stuck bolt
- failure to load rounds?
- FTEject on new rifle
- good tools
- Lower Problem
- Daniel Defense M4 v7 failing to chamber .223 reliably?
- Suggestions for Adding A2 Buffer Tube
- No-Go stuck in Upper
- How to fix: bent gas ring, stuck bolt
- Carbine Buffer Weight vs. Muzzle Velocity
- Fouling Relation To Barrel Length
- Centurion rail install problem
- What causes this? (Pic and details below)
- Broken Retaining Pin, Impossibly hard trigger, Why?
- M4 trigger not resetting
- Piston vs. DI weight comparison
- Accuracy questions
- charging handle not locking
- Have any of you installed a Nordic Components
- Shot my first ar-15 for the first time this afternoon and I need some help.
- DD BCG Chrome sticking
- Unknown muzzle device
- Has anyone done heat measurement tests on tube/rail-less handguards?
- 14.7 barrel plus KAC qd FH =16 inches. yMMV.
- barrel nut torque - point of no return?
- All QD swivels created equal?
- Small hole upper pivot pin diameter variance?
- Bolt Failure Questions
- BCM SPR Mk 12 Mod Numbers ?
- Removing thumb nuts (knobs) from carry handle or LMT BUIS?
- Colt 6920 Jammed
- Does the barrel nut torque affect accuracy?
- Going burst mode...on accident
- Nitrided Stainless Barrel vs. Chrome Lined CHF
- Gas Block / FSB Pin Location
- Switchblock rail options - Centurion or DD?
- Passed 400 yards rounds are no impact no idea.
- 14.5 mid vs carbine gas reliability issues?
- Dirty muzzle brake cause a fireball
- Shot Out Barrel Inquiry
- Mounting things more to the rear or front of the rail slot?
- Please help me diagnose this junk!
- Torque Settings of Pieces/Parts
- How to check for a true 5.56 chamber
- Which gas block ?
- Gas block stuck
- Noveske Clamp-On Switchblock inquiries
- Spiral fluted barrels
- Barrel differences : medium/gov/hb.
- WTK: Strange looking BE Meyers 5.56 Flash Hider?
- VIDEO compares muzzle devices
- changing out jp handguard on jp-15
- Do u know how to use the rear sights?
- Do AR manufacturers "do" the mid-length differently?
- Diagnosing Deflection marks
- Sealed DI?
- Spent casings sticking in chamber
- delete
- hammer locking to the rear on factory lmt lower
- Is "the Chart" still being updated, or is it over?
- Buffer tube pin secure?
- Gas Block/Front Sight Recommendations - M&P15 Sport
- 416R Stainless Barrels Full Auto
- BCM 14.5" midlength gas port size?
- Short Stroking
- Lightweight/standard profile pics?
- Best AR ejector tool?
- compensators
- F~marked FSB on a middy A2 ?
- Flash Hiders over 2"
- Dumb question of the day regarding bcm charging handle latch...
- Vltor MUR + Tube handguard ?
- Help removing A2 RE - LaRue PredetAR
- Buffer Recoil
- Aluminum handguards (tubes)
- What does your muzzle device do for you?
- A question for SSA users
- Bolt bore wear?
- M4 vs HBAR barrel accuracy and weight
- Preventative Maintenance: Bolt Replacement
- carry handle heights, FSB's, and other confusions
- Deleted
- WHAT'S SHIPPING: Detailed Look at the Sigarms M400
- WHAT’S SHIPPING: Detailed Look at the BCM BCM4 NFA Mod 1 (SBR)
- Buffer information
- BCG help!!!!!!!!!!!
- Suppressed SR-15 Match
- Help with 14.5" M4 Barrel ID
- Replacing shaved down front sight
- BCM Gas Block help/question?
- Over torqued barrel nut
- Armalite improvements
- 18" Failure to Feed (diagnosis)???
- Hand stop attachment lightweigt forend
- 50 meters vs 50 yards
- Teach me something.
- Help Diagnose My 11.5 SBR
- Colt Bolt from Brownells (223 vs 5.56)
- FF Tube and cut down FSB questions
- What weight motor oil for lube??
- DIY machining lower receiver
- Need help with my AR, Bolt not locking back after last round
- DPMS Reciever Misc. Springs Reliability
- How clean is clean for function, to overcleaning?
- FSB Taper pin problem, possible solutions?
- Vltor A5 and Syrac Adjustable Gas Block Question...
- Has anyone installed and used the AR Gold trigger?
- Accuracy of Noveske Stainless Steel Barrel vs Chromed Barrel
- Short Gas Systems w/ Rifle Buffers
- NSR rail with lopro gas block Help
- The Advantages of Monolithic Uppers
- Safety selector problem
- 2 quick questions
- Failure to fire troubleshooting checklist
- Gas Ring Replacement Question
- Help 6.8 spc jamming and failure to feed
- Weights inside buffer are loose
- Incorrectly Installed Geissele SSA Trigger: How Do I Fix It?
- R-15 bolt wont unlock.
- Checking headspace
- Melonite barrel care?
- Not your typical failure to extract
- Who can install FSB on a nitrided barrel?
- Bolt is not locking after last round. Specs/Details inside.
- AR-15 dust cover hinge pins
- Stupid tight chamber on Mk12 assembly?!?
- Palmetto State Armory Detent Pins?
- Noveske Flared Forged Lower (FFL) with Magpul M3
- Barrel Question for a new project ;17" rifle gas barrel
- Fitting a bolt to a barrel
- BCG pressure doesn't drop sharply after bullet exits muzzle ??
- Thoughts on sending out BCG for NIB coating.
- Customized adjustable gas block....?
- Headspace and manufacturing tolerances
- Clarification on Troy Rails
- Gas Port Erosion @ 10K
- Help- double feed -jam
- Pitting on SureFire MB556K after 1k rounds
- The URX II rifle length Build Please help!
- Bolt carrier "catching"
- URX II does anyone know who can install it?
- Need some help w/ the Vltor A5
- Anti-seize grease??
- Actual vs measured barrel torque question
- Preventative replacement
- Random part fell out of my upper?
- Properly install and headspace barrel on AR?
- Colt LE6920 with no firing pin spring??
- Magpul trigger guard
- Torquing Old Barrel to New Upper Receiver
- No firing pin spring???
- New handguard and BUIS
- Possible stripped pistol grip thread