Decided to go all out and do a clone correct SOPMOD Block II MK18 / CQBR. Little did I know it would take over two years to collect all the bits and pieces. Although there are some things that I would really like to change out (I'm a lefty), I decided to stick to what I believe are the most commonly issued parts for this platform. Hopefully, this can be used as a reference for others interested in taking the same path.
Base rifle:
- Colt LE6920 (M4 CARBINE marked)
Lower swap:
- I later replaced the Colt LE6920 lower with a Colt LE6920SOCOM (M4A1 CARBINE marked) one, as it is more clone appropriate.
Upper:
- Upper receiver - Colt LE6920
- BCG - Colt
- Reliability kit - BCM extractor spring, BCM extractor spring insert, BCM o-ring
- Charging handle - PRI M84 Gasbuster
- Barrel - Colt LE6920 (cut to 10.3" w/ gas port opened to 0.070" by ADCO)
- Gas Block - Daniel Defense MK12
- Gas tube - Colt
- Flash Hider - Surefire FH4P Model No: FH556RC-1/2-28
- Hand guard - Daniel Defense MK18 RIS II (FDE)
- Forward Assist - Colt (tear drop)
Upper Accessories:
- Front BUIS - KAC RAS Front Folding Sight (99051-TAUPE)
- Rear BUIS - KAC 300 Meter Flip-Up Rear Sight (97082)
- Rail Covers - Magpul (FDE)
- Vertical Fore Grip - Tango Down (ITI) BGV-ITI (FDE)
- Sling mount - CQD
- Weapon Light - L-3 WMX200 (VBL-000-A27)
- Optic - ELCAN SpecterDR™ 1-4x 5.56 (FDE)
- Optic (Alternate) - EOTech EXPS3-0 (FDE)
- Suppressor - Surefire SOCOM556-RC (FDE)
- Target Pointer / Illuminator / Aiming Laser - L-3 - Insight Technologies ATPIAL-C, AN/PEQ-15 (FDE)
- ATPIAL/Weapon Light Dual Switch - L3 - Insight Dual Button Remote (FDE)
Lower:
- Lower - COLT LE 6920 SOCOM (M4A1 CARBINE marked)
- Lower Parts Kit (LPK) - Colt
- Trigger - Geissele SSA
- Grip - Colt A2
- Endplate - CQD
- Receiver Extension - Colt (4 position)
- Castle Nut - Colt
- Buffer - Colt H2
- Buffer Spring - Colt (carbine)
- Buttstock - LMT Enhanced SOPMOD Gen I (black)
- Buttstock (Alternate) - LMT Enhanced SOPMOD Gen I (FDE)
Misc:
- Sling - VTAC 2 Point - Padded (AOR-1)
- Magazine(s) - Magpul PMAG M2 30 rds. (FDE)
This has been the most fun I have ever had on a build and the end product has been utterly reliable. I will note that it is a bit heavy compared to my other SBRs but for this build, I wouldn't have it any other way!
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