AR-15 Variants - Non-factory Military Models

Non-factory Military Models

Name Base weapon Stock Fire control Rear sight Forward assist Case deflector Barrel length Barrel profile Barrel twist Hand guards Bayonet Lug Muzzle device
GUU-5/P GAU-5/A or GAU-5A/A 2nd or 3rd Generation S-1-F A1 Yes No 14.5 in. A1 or M4 1:7 Short Ribbed Yes A1 or A2
GUU-5/P GAU-5/A or GAU-5A/A 2nd or 3rd Generation S-1-F A2 or Flattop Yes Yes 14.5 in. M4 1:7 M4 Yes A2
Mekut'zar Model 653 3rd Generation or Israeli S-1-F A1 Yes No 14.5 in. M4 1:7 Short Ribbed Yes A2
Mekut'zrar Model 653 2nd Generation or Israeli S-1-F A1 Yes No Variable; 9" average A1 1:12 Short Ribbed No Various

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