2011年7月7日 · Early Block II M4A1s still used the KAC M4 RIS/RAS DD RIS II in dark earth Vertical grips Tango down battle grip in tan KAC Grip-Pod Rail panels: Tango Down KAC Front sight: KAC flip up in tan standard front sight base (if early Block II with M4 RIS/RAS) Optics: Elcan Specter DR SU-230 EOTech SU-231-PEQ (EOTech 553)

2022年1月5日 · An example is a F16 Block 20 will have certain upgrades, like a newly developed radar system, that was not available on the Block 19 aircraft. It just annotates a dividing line in the series of Carbines or other systems made so you know which ones have a new part or design change from the factory.

2021年6月12日 · The URGI feels good, but the Block 2 just seems stronger, without the small Allen screws for alignment, although those are helped by the small alignment tabs above them. The Block 2 has a mounting plate with 6 steel bolts. The Pic rail seems stronger than M-Lok, but M-Lok seems strong enough and tested better than Keymod.

2013年4月13日 · I'm in the process of building a block I to match my Block II & Mk18, I'll post pics soon. NT4 still waiting on ATF Not two Elcan's, but the same rifle as a phased replacement, and currently Block II.

2019年1月15日 · Block II: Matech rear with Knights front or FSP for Army The Knights 300m rear was a SOPMOD Block I era sight for Army Just some found there way onto Block II rifles. But they stopped being issued since 2005ish Since 2010 its been all Matech (for Army) Unless you are going Marine or Navy then Knights 600m rear.

2019年2月9日 · It’s not really an issue with a SBR lower, but it’s something to consider. I recently changed some of my build around because of that. My Block 2 FSP became a Mk 18, and the RIS II rail got paired with a 16” 6920 barrel, DD upper, and a Colt lower. I still have a couple 14.5” Colt SOCOM barrels if I choose to either SBR or P&W.

2015年5月20日 · I like my "Block II-ish" AR with RIS II FSP and ACOG but it's pretty heavy. The added weight doesn't really accomplish much though. It's just heavier. I think I like the regular M4/Block I/PR style AR's better. They just feel more light and handy like a carbine should.

2017年1月26日 · [ARCHIVED THREAD] - M4A1 Block II Parts List Spreadsheet. ARCHIVED; AR-15 » AR Discussions. AR Sponsor:

2014年3月5日 · * Colt SOCOM Profile Barrel M4 14.5" Looking for: * Eotech 553 Tan * Eotech EXPS03 Tan * Eotech G23 or G33 Tan * DBAL I2 Tan _____ NOVESKE 14.5" AFGHAN BUILD I wanted to keep 2 things in mind when building this... Weight and style. I wanted to keep the weight down as much as possible (possibly 7lbs) while keeping it simple and fresh.

2021年11月20日 · Thanks for the photos folks. The setup I have is a TA31 with a RM06 (adjustable LED) so I realize it won’t be correct for any block (newer tech RMR w/older tech ACOG). My dilemma, which almost-correct M4 I should put it on? Block l, block 1.5 or block II? Noticed it on block IIs in the recent pics above (but with RM02s - mine’s an 06).