Project Featherweight

[rob_s]

Here's what I have so far. I just don't have enough time in the day to take pics of everything on the scale.

Colt CAR stock body (plastic) 4.4oz
VLTOR E-Mod stock 13.6oz
LMT SOPMOD stock body 11.3oz
Magpul CTR stock body 8.9oz
Magpul UBR body 1lb 7.3oz
Magpul PRS body 1lb 10.9oz
Rifle receiver extension 3.4oz
Magpul UBR aka ‘entry length’ receiver extension 2.7oz
Unknown mil-spec carbine receiver extension 3.8oz
VLTOR mil-spec receiver extension 3.7oz
BCM castle nut and end plate 1.2oz
Daniel Defense QD end plate (w/o QD loop) 0.4oz

Commercial A2 pistol grip 2.6oz
Magpul MOE pistol grip 2.4oz
Tangodown pistol grip 3.6oz
Hogue pistol grip 2.7oz
Ergo pistol grip 3.2oz

Aluminum OEM triggerguard 0.3oz
Magpul MOE triggerguard 0.2oz
Magpul enhanced triggerguard 0.5oz

Norgon ambi-catch (no stock spring or button) 0.5oz
OEM mag catch (no spring or button) 0.4oz
Troy flip up rear sight 1.8oz
Troy fixed rear sight 2.1oz
DD fixed rear sight 1.7oz
DD fixed front sight 1.2oz
Magpul MBUS front sight 1.2oz
LMT MRP fixed front sight 2.2oz

A2 flash hider 2.1oz
A1 flash hider 2.0oz
Surefire Brake (for 556K, 212) 3.8oz
Troy medieval flash hider 3.0oz

Magpul 20 round magazine (w/o dust cover) 3.4oz
Lancer 30 round magazine 4.2oz
Tangodown 30 round magazine 5.3oz

VTAC low profile QD sling mount 0.8oz
VTAC LUSA sling mount 0.9oz
BCM standard CH 1.2oz
BCM bolt 1.6oz
BCM cam pin 0.3oz
BCM carrier key and screws 0.9oz
BCM Forward assist and spring 0.9oz

A2 delta ring assy 2.7oz
Snap ring 0.2oz
Weld spring 0.3oz.
Delta ring A2 0.9oz
Barrel nut (stock) 1.3oz

A1 handguard ring (ring only) 0.4oz
CAR/M4 handguard cap 0.4oz
Arrendondo mag catch (plastic button, 2 screws and button extension) 0.2oz
OEM mag catch button 0.1oz
Magpul AFG with screw and flat insert 3.0oz
VTAC light mount 1.8oz
Dust door assy, spring, rod and c-clip 0.8oz
BCM firing pin 0.3oz
Magpul ASAP 1.4oz
Gear Sector end plate 0.7oz
BCM long A2 flash hider 2.3oz
RRA 2 stage trigger with springs and pins 2.5oz
Geissele SSA trigger with springs and pins 2.3oz
OEM fire control (hammer, trigger, disconnector, pins and springs) 2.5oz
AAC M4-2000 51 tooth brake 3.7oz
Magpul enhanced (long) stock pad (w/o screws) 2.1oz

Troy 9” TRX rail with bbl nut and two mounting screws 8.7oz
VTAC/Troy TRX 9” rail with bbl nut and two mounting screws 9.8oz
VTAC/Troy TRX 11” rail with bbl nut and two mounting screws 11.4oz
VTAC/Troy TRX 13” rail with bbl nut and two mounting screws 12.6oz

DD 12” RIS II rail with all mounting screws, bbl nut, 6 screws and flange 1lb 2.2oz
DD 12” RIS II FSB model with all mounting screws, bbl nut, 6 screws and flange 1lb 12oz
DD 9.5” RIS II Mk18 rail with all mounting screws, bbl nut, 6 screws and flange 14.3oz

DD 10” Lite rail with all mounting screws, bbl nut, 6 screws and flange 13.0oz
DD 9” Lite rail with all mounting screws, bbl nut, 6 screws and flange 12.2oz

DD 12” Omega with all mounting hardware 13.6oz
DD 9” Omega with all mounting hardware 9.9oz
DD 7” Omega with all mounting hardware 7.8oz
DD 7” Omega piston rail with all mounting hardware 8.4oz

YHM 12” diamond rail barrel nut, slip ring and 2 anti-rotational screws 1lb 4.3oz
YHM Spectre length diamond rail with barrel nut, slip ring and 2 anti-rotational screws 1lb 0.5oz

Tryin' to make me get off my ass and find that chart, aren't you.

I know I have it, it's just a matter of which of three external hard drives (none of which are currently connected to anything) that I have to go through.

[Robb Jensen]

Tryin' to make me get off my ass and find that chart, aren't you.

I know I have it, it's just a matter of which of three external hard drives (none of which are currently connected to anything) that I have to go through.

You can do it!

[f.2]

Troy 9” TRX rail with bbl nut and two mounting screws 8.7oz
VTAC/Troy TRX 9” rail with bbl nut and two mounting screws 9.8oz
VTAC/Troy TRX 11” rail with bbl nut and two mounting screws 11.4oz
VTAC/Troy TRX 13” rail with bbl nut and two mounting screws 12.6oz

Does the 11" Troy TRX Extreme on your featherweight weigh about the same as the VTAC?

[ForTehNguyen]

we need to sticky that type of parts weight list. I have a postal scale coming in so I can add more to the list as well.

[Robb Jensen]

Does the 11" Troy TRX Extreme on your featherweight weigh about the same as the VTAC?

Judging from the 9" weights where the 9" VTAC/Troy is heavier by about an ounce. I'm sure the 11" VTAC/Troy is heavier than the Troy TRX as well.

[f.2]

Judging from the 9" weights where the 9" VTAC/Troy is heavier by about an ounce. I'm sure the 11" VTAC/Troy is heavier than the Troy TRX as well.

you're right, missed that.

[ForTehNguyen]

My postal scale came in today, here are some more AR15 component weights:

• Lowers are assumed to have LPKs
• Uppers are weighed without BCG, CH, handguards, front/rear sights unless otherwise stated
• Uppers are assumed to have front sight tower if no front sight is stated. All uppers have A2 FHs

BCM 16" Midlength Lighweight Upper: 2lb 11.2oz
BCM 16" Midlength + DD Lite 12.0 + Eotech 512 + Magpul MBUS Front/Rear + 3x Rail Ladders: 4lb 6.6oz
20" BCM Govt Profile Upper + Carry Handle: 3lb 13.4oz
Delton 16" Midlength HBAR + Magpul MBUS Rear: 3lb 8.9oz

Cav-15 MkII Lower + CAR Buffer/Spring: 1lb 11.6oz
Lower + A2 Stock + Rifle Buffer/Spring: 2lb 8.1oz
Lower + H Buffer/Spring + Magpul MIAD + ACS + BAD + ASAP: 2lb 11.1oz
Lower + CAR Buffer/Spring + Magpul UBR + BAD + MOE Grip: 2lb 14.4oz

Rifle Handguards: 9.6oz
BCM M16 BCG: 11.5oz
Delton Semi BCG: 11.1oz
Charging Handle: 1.1oz
BCM Gunfighter CH Mod3: 1.3oz
BCM Gunfighter CH Mod4: 1.2oz
Delton Midlength Handguards: 6.9oz
Magpul Rail Ladder: .4oz
Magpul AFG: 2.9oz
Magpul BAD: .2oz
Magpul MBUS Rear: 1.4oz
Magpul MS2 Sling: 7.9oz
Cav-15 MkII Sling: 2.6oz
QD Swivel: .9oz
Bobro Stubby VFG: 3.8oz

Prvi Partizan 5.56mm M193: 11.9gr = .420oz
Centurion .223 55gr: 11.4g = .402oz
Magpul PMAG RevM + 30x Prvi Partizan 55gr M193 + Mag cover: 1lb 1.8oz
Magpul PMAG RevM + 30x Centurion .223 55gr + Mag cover: 1lb 1.2oz
Magpul PMAG Old + 30x Centurion .223 55gr + Mag cover: 1lb 1.7oz
Magpul PMAG 20 + 20x Prvi Partizan 55gr M193 + Mag cover: 12.1oz
CProducts USGI Mag + Magpul Follower: 4.1oz

[f.2]

Troy 9” TRX rail with bbl nut and two mounting screws 8.7oz
VTAC/Troy TRX 9” rail with bbl nut and two mounting screws 9.8oz
VTAC/Troy TRX 11” rail with bbl nut and two mounting screws 11.4oz
VTAC/Troy TRX 13” rail with bbl nut and two mounting screws 12.6oz

Troy says the 11" TRX extreme weighs 9.93 with rail sections. Maybe that's without the bbl nut though?

New Viking Tactics VTAC EXTREME BattleRail - By Troy Industries

[sniperfrog]

Anybody try using one of those Clark carbon fiber float tubes? I think there only like 6 ounces. Durability might be an issue though.

[Robb Jensen]

Anybody try using one of those Clark carbon fiber float tubes? I think there only like 6 ounces. Durability might be an issue though.

Those are insanely light but what I hated about them is that the tube had to be glued to the bbl nut. If you had one covering a low pro gas block it'll be a bitch to remove the tube to change a gas tube.